diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
-* 0.1.0.0 (2012-04-20)
+* 0.2.0 (2021-06-03)
 
-After years of friendly reminders, a zero version gets finally released =]
+  - Drop support for GHC 8.0 (#35)
+  - Add support for GHC 9.0 (#36)
+  - Replace the unmaintained `thrift` package with `pinch` (#34)
+  - wai: Better default operation name, and allow customising it (#33, #37)
+
+  The major version is bumped because the packages won't compile with GHC 8.0
+  anymore.
+
+* 0.1.0.0 (2021-04-20)
+
+  After years of friendly reminders, a zero version gets finally released =]
diff --git a/gen-src/ZipkinCore_Consts.hs b/gen-src/ZipkinCore_Consts.hs
deleted file mode 100644
--- a/gen-src/ZipkinCore_Consts.hs
+++ /dev/null
@@ -1,116 +0,0 @@
-{-# LANGUAGE DeriveDataTypeable #-}
-{-# LANGUAGE DeriveGeneric #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# OPTIONS_GHC -fno-warn-missing-fields #-}
-{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
-{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
-{-# OPTIONS_GHC -fno-warn-unused-imports #-}
-{-# OPTIONS_GHC -fno-warn-unused-matches #-}
-
------------------------------------------------------------------
--- Autogenerated by Thrift Compiler (0.11.0)                      --
---                                                             --
--- DO NOT EDIT UNLESS YOU ARE SURE YOU KNOW WHAT YOU ARE DOING --
------------------------------------------------------------------
-
-module ZipkinCore_Consts where
-import Prelude (($), (.), (>>=), (==), (++))
-import qualified Prelude as P
-import qualified Control.Exception as X
-import qualified Control.Monad as M ( liftM, ap, when )
-import Data.Functor ( (<$>) )
-import qualified Data.ByteString.Lazy as LBS
-import qualified Data.Hashable as H
-import qualified Data.Int as I
-import qualified Data.Maybe as M (catMaybes)
-import qualified Data.Text.Lazy.Encoding as E ( decodeUtf8, encodeUtf8 )
-import qualified Data.Text.Lazy as LT
-import qualified GHC.Generics as G (Generic)
-import qualified Data.Typeable as TY ( Typeable )
-import qualified Data.HashMap.Strict as Map
-import qualified Data.HashSet as Set
-import qualified Data.Vector as Vector
-import qualified Test.QuickCheck.Arbitrary as QC ( Arbitrary(..) )
-import qualified Test.QuickCheck as QC ( elements )
-
-import qualified Thrift as T
-import qualified Thrift.Types as T
-import qualified Thrift.Arbitraries as T
-
-
-import ZipkinCore_Types
-cLIENT_SEND :: LT.Text
-cLIENT_SEND = "cs"
-
-cLIENT_RECV :: LT.Text
-cLIENT_RECV = "cr"
-
-sERVER_SEND :: LT.Text
-sERVER_SEND = "ss"
-
-sERVER_RECV :: LT.Text
-sERVER_RECV = "sr"
-
-mESSAGE_SEND :: LT.Text
-mESSAGE_SEND = "ms"
-
-mESSAGE_RECV :: LT.Text
-mESSAGE_RECV = "mr"
-
-wIRE_SEND :: LT.Text
-wIRE_SEND = "ws"
-
-wIRE_RECV :: LT.Text
-wIRE_RECV = "wr"
-
-cLIENT_SEND_FRAGMENT :: LT.Text
-cLIENT_SEND_FRAGMENT = "csf"
-
-cLIENT_RECV_FRAGMENT :: LT.Text
-cLIENT_RECV_FRAGMENT = "crf"
-
-sERVER_SEND_FRAGMENT :: LT.Text
-sERVER_SEND_FRAGMENT = "ssf"
-
-sERVER_RECV_FRAGMENT :: LT.Text
-sERVER_RECV_FRAGMENT = "srf"
-
-hTTP_HOST :: LT.Text
-hTTP_HOST = "http.host"
-
-hTTP_METHOD :: LT.Text
-hTTP_METHOD = "http.method"
-
-hTTP_PATH :: LT.Text
-hTTP_PATH = "http.path"
-
-hTTP_ROUTE :: LT.Text
-hTTP_ROUTE = "http.route"
-
-hTTP_URL :: LT.Text
-hTTP_URL = "http.url"
-
-hTTP_STATUS_CODE :: LT.Text
-hTTP_STATUS_CODE = "http.status_code"
-
-hTTP_REQUEST_SIZE :: LT.Text
-hTTP_REQUEST_SIZE = "http.request.size"
-
-hTTP_RESPONSE_SIZE :: LT.Text
-hTTP_RESPONSE_SIZE = "http.response.size"
-
-lOCAL_COMPONENT :: LT.Text
-lOCAL_COMPONENT = "lc"
-
-eRROR :: LT.Text
-eRROR = "error"
-
-cLIENT_ADDR :: LT.Text
-cLIENT_ADDR = "ca"
-
-sERVER_ADDR :: LT.Text
-sERVER_ADDR = "sa"
-
-mESSAGE_ADDR :: LT.Text
-mESSAGE_ADDR = "ma"
-
diff --git a/gen-src/ZipkinCore_Types.hs b/gen-src/ZipkinCore_Types.hs
deleted file mode 100644
--- a/gen-src/ZipkinCore_Types.hs
+++ /dev/null
@@ -1,293 +0,0 @@
-{-# LANGUAGE DeriveDataTypeable #-}
-{-# LANGUAGE DeriveGeneric #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# OPTIONS_GHC -fno-warn-missing-fields #-}
-{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
-{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
-{-# OPTIONS_GHC -fno-warn-unused-imports #-}
-{-# OPTIONS_GHC -fno-warn-unused-matches #-}
-
------------------------------------------------------------------
--- Autogenerated by Thrift Compiler (0.11.0)                      --
---                                                             --
--- DO NOT EDIT UNLESS YOU ARE SURE YOU KNOW WHAT YOU ARE DOING --
------------------------------------------------------------------
-
-module ZipkinCore_Types where
-import Prelude (($), (.), (>>=), (==), (++))
-import qualified Prelude as P
-import qualified Control.Exception as X
-import qualified Control.Monad as M ( liftM, ap, when )
-import Data.Functor ( (<$>) )
-import qualified Data.ByteString.Lazy as LBS
-import qualified Data.Hashable as H
-import qualified Data.Int as I
-import qualified Data.Maybe as M (catMaybes)
-import qualified Data.Text.Lazy.Encoding as E ( decodeUtf8, encodeUtf8 )
-import qualified Data.Text.Lazy as LT
-import qualified GHC.Generics as G (Generic)
-import qualified Data.Typeable as TY ( Typeable )
-import qualified Data.HashMap.Strict as Map
-import qualified Data.HashSet as Set
-import qualified Data.Vector as Vector
-import qualified Test.QuickCheck.Arbitrary as QC ( Arbitrary(..) )
-import qualified Test.QuickCheck as QC ( elements )
-
-import qualified Thrift as T
-import qualified Thrift.Types as T
-import qualified Thrift.Arbitraries as T
-
-
-data AnnotationType = BOOL|BYTES|I16|I32|I64|DOUBLE|STRING  deriving (P.Show, P.Eq, G.Generic, TY.Typeable, P.Ord, P.Bounded)
-instance P.Enum AnnotationType where
-  fromEnum t = case t of
-    BOOL -> 0
-    BYTES -> 1
-    I16 -> 2
-    I32 -> 3
-    I64 -> 4
-    DOUBLE -> 5
-    STRING -> 6
-  toEnum t = case t of
-    0 -> BOOL
-    1 -> BYTES
-    2 -> I16
-    3 -> I32
-    4 -> I64
-    5 -> DOUBLE
-    6 -> STRING
-    _ -> X.throw T.ThriftException
-instance H.Hashable AnnotationType where
-  hashWithSalt salt = H.hashWithSalt salt P.. P.fromEnum
-instance QC.Arbitrary AnnotationType where
-  arbitrary = QC.elements (P.enumFromTo P.minBound P.maxBound)
-data Endpoint = Endpoint  { endpoint_ipv4 :: I.Int32
-  , endpoint_port :: I.Int16
-  , endpoint_service_name :: LT.Text
-  , endpoint_ipv6 :: P.Maybe LBS.ByteString
-  } deriving (P.Show,P.Eq,G.Generic,TY.Typeable)
-instance H.Hashable Endpoint where
-  hashWithSalt salt record = salt   `H.hashWithSalt` endpoint_ipv4 record   `H.hashWithSalt` endpoint_port record   `H.hashWithSalt` endpoint_service_name record   `H.hashWithSalt` endpoint_ipv6 record  
-instance QC.Arbitrary Endpoint where 
-  arbitrary = M.liftM Endpoint (QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-  shrink obj | obj == default_Endpoint = []
-             | P.otherwise = M.catMaybes
-    [ if obj == default_Endpoint{endpoint_ipv4 = endpoint_ipv4 obj} then P.Nothing else P.Just $ default_Endpoint{endpoint_ipv4 = endpoint_ipv4 obj}
-    , if obj == default_Endpoint{endpoint_port = endpoint_port obj} then P.Nothing else P.Just $ default_Endpoint{endpoint_port = endpoint_port obj}
-    , if obj == default_Endpoint{endpoint_service_name = endpoint_service_name obj} then P.Nothing else P.Just $ default_Endpoint{endpoint_service_name = endpoint_service_name obj}
-    , if obj == default_Endpoint{endpoint_ipv6 = endpoint_ipv6 obj} then P.Nothing else P.Just $ default_Endpoint{endpoint_ipv6 = endpoint_ipv6 obj}
-    ]
-from_Endpoint :: Endpoint -> T.ThriftVal
-from_Endpoint record = T.TStruct $ Map.fromList $ M.catMaybes
-  [ (\_v2 -> P.Just (1, ("ipv4",T.TI32 _v2))) $ endpoint_ipv4 record
-  , (\_v2 -> P.Just (2, ("port",T.TI16 _v2))) $ endpoint_port record
-  , (\_v2 -> P.Just (3, ("service_name",T.TString $ E.encodeUtf8 _v2))) $ endpoint_service_name record
-  , (\_v2 -> (4, ("ipv6",T.TBinary _v2))) <$> endpoint_ipv6 record
-  ]
-write_Endpoint :: T.Protocol p => p -> Endpoint -> P.IO ()
-write_Endpoint oprot record = T.writeVal oprot $ from_Endpoint record
-encode_Endpoint :: T.StatelessProtocol p => p -> Endpoint -> LBS.ByteString
-encode_Endpoint oprot record = T.serializeVal oprot $ from_Endpoint record
-to_Endpoint :: T.ThriftVal -> Endpoint
-to_Endpoint (T.TStruct fields) = Endpoint{
-  endpoint_ipv4 = P.maybe (endpoint_ipv4 default_Endpoint) (\(_,_val4) -> (case _val4 of {T.TI32 _val5 -> _val5; _ -> P.error "wrong type"})) (Map.lookup (1) fields),
-  endpoint_port = P.maybe (endpoint_port default_Endpoint) (\(_,_val4) -> (case _val4 of {T.TI16 _val6 -> _val6; _ -> P.error "wrong type"})) (Map.lookup (2) fields),
-  endpoint_service_name = P.maybe (endpoint_service_name default_Endpoint) (\(_,_val4) -> (case _val4 of {T.TString _val7 -> E.decodeUtf8 _val7; _ -> P.error "wrong type"})) (Map.lookup (3) fields),
-  endpoint_ipv6 = P.maybe (P.Nothing) (\(_,_val4) -> P.Just (case _val4 of {T.TBinary _val8 -> _val8; T.TString _val8 -> _val8; _ -> P.error "wrong type"})) (Map.lookup (4) fields)
-  }
-to_Endpoint _ = P.error "not a struct"
-read_Endpoint :: T.Protocol p => p -> P.IO Endpoint
-read_Endpoint iprot = to_Endpoint <$> T.readVal iprot (T.T_STRUCT typemap_Endpoint)
-decode_Endpoint :: T.StatelessProtocol p => p -> LBS.ByteString -> Endpoint
-decode_Endpoint iprot bs = to_Endpoint $ T.deserializeVal iprot (T.T_STRUCT typemap_Endpoint) bs
-typemap_Endpoint :: T.TypeMap
-typemap_Endpoint = Map.fromList [(1,("ipv4",T.T_I32)),(2,("port",T.T_I16)),(3,("service_name",T.T_STRING)),(4,("ipv6",T.T_BINARY))]
-default_Endpoint :: Endpoint
-default_Endpoint = Endpoint{
-  endpoint_ipv4 = 0,
-  endpoint_port = 0,
-  endpoint_service_name = "",
-  endpoint_ipv6 = P.Nothing}
-data Annotation = Annotation  { annotation_timestamp :: I.Int64
-  , annotation_value :: LT.Text
-  , annotation_host :: P.Maybe Endpoint
-  } deriving (P.Show,P.Eq,G.Generic,TY.Typeable)
-instance H.Hashable Annotation where
-  hashWithSalt salt record = salt   `H.hashWithSalt` annotation_timestamp record   `H.hashWithSalt` annotation_value record   `H.hashWithSalt` annotation_host record  
-instance QC.Arbitrary Annotation where 
-  arbitrary = M.liftM Annotation (QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-  shrink obj | obj == default_Annotation = []
-             | P.otherwise = M.catMaybes
-    [ if obj == default_Annotation{annotation_timestamp = annotation_timestamp obj} then P.Nothing else P.Just $ default_Annotation{annotation_timestamp = annotation_timestamp obj}
-    , if obj == default_Annotation{annotation_value = annotation_value obj} then P.Nothing else P.Just $ default_Annotation{annotation_value = annotation_value obj}
-    , if obj == default_Annotation{annotation_host = annotation_host obj} then P.Nothing else P.Just $ default_Annotation{annotation_host = annotation_host obj}
-    ]
-from_Annotation :: Annotation -> T.ThriftVal
-from_Annotation record = T.TStruct $ Map.fromList $ M.catMaybes
-  [ (\_v11 -> P.Just (1, ("timestamp",T.TI64 _v11))) $ annotation_timestamp record
-  , (\_v11 -> P.Just (2, ("value",T.TString $ E.encodeUtf8 _v11))) $ annotation_value record
-  , (\_v11 -> (3, ("host",from_Endpoint _v11))) <$> annotation_host record
-  ]
-write_Annotation :: T.Protocol p => p -> Annotation -> P.IO ()
-write_Annotation oprot record = T.writeVal oprot $ from_Annotation record
-encode_Annotation :: T.StatelessProtocol p => p -> Annotation -> LBS.ByteString
-encode_Annotation oprot record = T.serializeVal oprot $ from_Annotation record
-to_Annotation :: T.ThriftVal -> Annotation
-to_Annotation (T.TStruct fields) = Annotation{
-  annotation_timestamp = P.maybe (annotation_timestamp default_Annotation) (\(_,_val13) -> (case _val13 of {T.TI64 _val14 -> _val14; _ -> P.error "wrong type"})) (Map.lookup (1) fields),
-  annotation_value = P.maybe (annotation_value default_Annotation) (\(_,_val13) -> (case _val13 of {T.TString _val15 -> E.decodeUtf8 _val15; _ -> P.error "wrong type"})) (Map.lookup (2) fields),
-  annotation_host = P.maybe (P.Nothing) (\(_,_val13) -> P.Just (case _val13 of {T.TStruct _val16 -> (to_Endpoint (T.TStruct _val16)); _ -> P.error "wrong type"})) (Map.lookup (3) fields)
-  }
-to_Annotation _ = P.error "not a struct"
-read_Annotation :: T.Protocol p => p -> P.IO Annotation
-read_Annotation iprot = to_Annotation <$> T.readVal iprot (T.T_STRUCT typemap_Annotation)
-decode_Annotation :: T.StatelessProtocol p => p -> LBS.ByteString -> Annotation
-decode_Annotation iprot bs = to_Annotation $ T.deserializeVal iprot (T.T_STRUCT typemap_Annotation) bs
-typemap_Annotation :: T.TypeMap
-typemap_Annotation = Map.fromList [(1,("timestamp",T.T_I64)),(2,("value",T.T_STRING)),(3,("host",(T.T_STRUCT typemap_Endpoint)))]
-default_Annotation :: Annotation
-default_Annotation = Annotation{
-  annotation_timestamp = 0,
-  annotation_value = "",
-  annotation_host = P.Nothing}
-data BinaryAnnotation = BinaryAnnotation  { binaryAnnotation_key :: LT.Text
-  , binaryAnnotation_value :: LBS.ByteString
-  , binaryAnnotation_annotation_type :: AnnotationType
-  , binaryAnnotation_host :: P.Maybe Endpoint
-  } deriving (P.Show,P.Eq,G.Generic,TY.Typeable)
-instance H.Hashable BinaryAnnotation where
-  hashWithSalt salt record = salt   `H.hashWithSalt` binaryAnnotation_key record   `H.hashWithSalt` binaryAnnotation_value record   `H.hashWithSalt` binaryAnnotation_annotation_type record   `H.hashWithSalt` binaryAnnotation_host record  
-instance QC.Arbitrary BinaryAnnotation where 
-  arbitrary = M.liftM BinaryAnnotation (QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-  shrink obj | obj == default_BinaryAnnotation = []
-             | P.otherwise = M.catMaybes
-    [ if obj == default_BinaryAnnotation{binaryAnnotation_key = binaryAnnotation_key obj} then P.Nothing else P.Just $ default_BinaryAnnotation{binaryAnnotation_key = binaryAnnotation_key obj}
-    , if obj == default_BinaryAnnotation{binaryAnnotation_value = binaryAnnotation_value obj} then P.Nothing else P.Just $ default_BinaryAnnotation{binaryAnnotation_value = binaryAnnotation_value obj}
-    , if obj == default_BinaryAnnotation{binaryAnnotation_annotation_type = binaryAnnotation_annotation_type obj} then P.Nothing else P.Just $ default_BinaryAnnotation{binaryAnnotation_annotation_type = binaryAnnotation_annotation_type obj}
-    , if obj == default_BinaryAnnotation{binaryAnnotation_host = binaryAnnotation_host obj} then P.Nothing else P.Just $ default_BinaryAnnotation{binaryAnnotation_host = binaryAnnotation_host obj}
-    ]
-from_BinaryAnnotation :: BinaryAnnotation -> T.ThriftVal
-from_BinaryAnnotation record = T.TStruct $ Map.fromList $ M.catMaybes
-  [ (\_v19 -> P.Just (1, ("key",T.TString $ E.encodeUtf8 _v19))) $ binaryAnnotation_key record
-  , (\_v19 -> P.Just (2, ("value",T.TBinary _v19))) $ binaryAnnotation_value record
-  , (\_v19 -> P.Just (3, ("annotation_type",T.TI32 $ P.fromIntegral $ P.fromEnum _v19))) $ binaryAnnotation_annotation_type record
-  , (\_v19 -> (4, ("host",from_Endpoint _v19))) <$> binaryAnnotation_host record
-  ]
-write_BinaryAnnotation :: T.Protocol p => p -> BinaryAnnotation -> P.IO ()
-write_BinaryAnnotation oprot record = T.writeVal oprot $ from_BinaryAnnotation record
-encode_BinaryAnnotation :: T.StatelessProtocol p => p -> BinaryAnnotation -> LBS.ByteString
-encode_BinaryAnnotation oprot record = T.serializeVal oprot $ from_BinaryAnnotation record
-to_BinaryAnnotation :: T.ThriftVal -> BinaryAnnotation
-to_BinaryAnnotation (T.TStruct fields) = BinaryAnnotation{
-  binaryAnnotation_key = P.maybe (binaryAnnotation_key default_BinaryAnnotation) (\(_,_val21) -> (case _val21 of {T.TString _val22 -> E.decodeUtf8 _val22; _ -> P.error "wrong type"})) (Map.lookup (1) fields),
-  binaryAnnotation_value = P.maybe (binaryAnnotation_value default_BinaryAnnotation) (\(_,_val21) -> (case _val21 of {T.TBinary _val23 -> _val23; T.TString _val23 -> _val23; _ -> P.error "wrong type"})) (Map.lookup (2) fields),
-  binaryAnnotation_annotation_type = P.maybe (binaryAnnotation_annotation_type default_BinaryAnnotation) (\(_,_val21) -> (case _val21 of {T.TI32 _val24 -> P.toEnum $ P.fromIntegral _val24; _ -> P.error "wrong type"})) (Map.lookup (3) fields),
-  binaryAnnotation_host = P.maybe (P.Nothing) (\(_,_val21) -> P.Just (case _val21 of {T.TStruct _val25 -> (to_Endpoint (T.TStruct _val25)); _ -> P.error "wrong type"})) (Map.lookup (4) fields)
-  }
-to_BinaryAnnotation _ = P.error "not a struct"
-read_BinaryAnnotation :: T.Protocol p => p -> P.IO BinaryAnnotation
-read_BinaryAnnotation iprot = to_BinaryAnnotation <$> T.readVal iprot (T.T_STRUCT typemap_BinaryAnnotation)
-decode_BinaryAnnotation :: T.StatelessProtocol p => p -> LBS.ByteString -> BinaryAnnotation
-decode_BinaryAnnotation iprot bs = to_BinaryAnnotation $ T.deserializeVal iprot (T.T_STRUCT typemap_BinaryAnnotation) bs
-typemap_BinaryAnnotation :: T.TypeMap
-typemap_BinaryAnnotation = Map.fromList [(1,("key",T.T_STRING)),(2,("value",T.T_BINARY)),(3,("annotation_type",T.T_I32)),(4,("host",(T.T_STRUCT typemap_Endpoint)))]
-default_BinaryAnnotation :: BinaryAnnotation
-default_BinaryAnnotation = BinaryAnnotation{
-  binaryAnnotation_key = "",
-  binaryAnnotation_value = "",
-  binaryAnnotation_annotation_type = (P.toEnum 0),
-  binaryAnnotation_host = P.Nothing}
-data Span = Span  { span_trace_id :: I.Int64
-  , span_name :: LT.Text
-  , span_id :: I.Int64
-  , span_parent_id :: P.Maybe I.Int64
-  , span_annotations :: (Vector.Vector Annotation)
-  , span_binary_annotations :: (Vector.Vector BinaryAnnotation)
-  , span_debug :: P.Maybe P.Bool
-  , span_timestamp :: P.Maybe I.Int64
-  , span_duration :: P.Maybe I.Int64
-  , span_trace_id_high :: P.Maybe I.Int64
-  } deriving (P.Show,P.Eq,G.Generic,TY.Typeable)
-instance H.Hashable Span where
-  hashWithSalt salt record = salt   `H.hashWithSalt` span_trace_id record   `H.hashWithSalt` span_name record   `H.hashWithSalt` span_id record   `H.hashWithSalt` span_parent_id record   `H.hashWithSalt` span_annotations record   `H.hashWithSalt` span_binary_annotations record   `H.hashWithSalt` span_debug record   `H.hashWithSalt` span_timestamp record   `H.hashWithSalt` span_duration record   `H.hashWithSalt` span_trace_id_high record  
-instance QC.Arbitrary Span where 
-  arbitrary = M.liftM Span (QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-          `M.ap`(M.liftM P.Just QC.arbitrary)
-  shrink obj | obj == default_Span = []
-             | P.otherwise = M.catMaybes
-    [ if obj == default_Span{span_trace_id = span_trace_id obj} then P.Nothing else P.Just $ default_Span{span_trace_id = span_trace_id obj}
-    , if obj == default_Span{span_name = span_name obj} then P.Nothing else P.Just $ default_Span{span_name = span_name obj}
-    , if obj == default_Span{span_id = span_id obj} then P.Nothing else P.Just $ default_Span{span_id = span_id obj}
-    , if obj == default_Span{span_parent_id = span_parent_id obj} then P.Nothing else P.Just $ default_Span{span_parent_id = span_parent_id obj}
-    , if obj == default_Span{span_annotations = span_annotations obj} then P.Nothing else P.Just $ default_Span{span_annotations = span_annotations obj}
-    , if obj == default_Span{span_binary_annotations = span_binary_annotations obj} then P.Nothing else P.Just $ default_Span{span_binary_annotations = span_binary_annotations obj}
-    , if obj == default_Span{span_debug = span_debug obj} then P.Nothing else P.Just $ default_Span{span_debug = span_debug obj}
-    , if obj == default_Span{span_timestamp = span_timestamp obj} then P.Nothing else P.Just $ default_Span{span_timestamp = span_timestamp obj}
-    , if obj == default_Span{span_duration = span_duration obj} then P.Nothing else P.Just $ default_Span{span_duration = span_duration obj}
-    , if obj == default_Span{span_trace_id_high = span_trace_id_high obj} then P.Nothing else P.Just $ default_Span{span_trace_id_high = span_trace_id_high obj}
-    ]
-from_Span :: Span -> T.ThriftVal
-from_Span record = T.TStruct $ Map.fromList $ M.catMaybes
-  [ (\_v28 -> P.Just (1, ("trace_id",T.TI64 _v28))) $ span_trace_id record
-  , (\_v28 -> P.Just (3, ("name",T.TString $ E.encodeUtf8 _v28))) $ span_name record
-  , (\_v28 -> P.Just (4, ("id",T.TI64 _v28))) $ span_id record
-  , (\_v28 -> (5, ("parent_id",T.TI64 _v28))) <$> span_parent_id record
-  , (\_v28 -> P.Just (6, ("annotations",T.TList (T.T_STRUCT typemap_Annotation) $ P.map (\_v30 -> from_Annotation _v30) $ Vector.toList _v28))) $ span_annotations record
-  , (\_v28 -> P.Just (8, ("binary_annotations",T.TList (T.T_STRUCT typemap_BinaryAnnotation) $ P.map (\_v32 -> from_BinaryAnnotation _v32) $ Vector.toList _v28))) $ span_binary_annotations record
-  , (\_v28 -> (9, ("debug",T.TBool _v28))) <$> span_debug record
-  , (\_v28 -> (10, ("timestamp",T.TI64 _v28))) <$> span_timestamp record
-  , (\_v28 -> (11, ("duration",T.TI64 _v28))) <$> span_duration record
-  , (\_v28 -> (12, ("trace_id_high",T.TI64 _v28))) <$> span_trace_id_high record
-  ]
-write_Span :: T.Protocol p => p -> Span -> P.IO ()
-write_Span oprot record = T.writeVal oprot $ from_Span record
-encode_Span :: T.StatelessProtocol p => p -> Span -> LBS.ByteString
-encode_Span oprot record = T.serializeVal oprot $ from_Span record
-to_Span :: T.ThriftVal -> Span
-to_Span (T.TStruct fields) = Span{
-  span_trace_id = P.maybe (span_trace_id default_Span) (\(_,_val34) -> (case _val34 of {T.TI64 _val35 -> _val35; _ -> P.error "wrong type"})) (Map.lookup (1) fields),
-  span_name = P.maybe (span_name default_Span) (\(_,_val34) -> (case _val34 of {T.TString _val36 -> E.decodeUtf8 _val36; _ -> P.error "wrong type"})) (Map.lookup (3) fields),
-  span_id = P.maybe (span_id default_Span) (\(_,_val34) -> (case _val34 of {T.TI64 _val37 -> _val37; _ -> P.error "wrong type"})) (Map.lookup (4) fields),
-  span_parent_id = P.maybe (P.Nothing) (\(_,_val34) -> P.Just (case _val34 of {T.TI64 _val38 -> _val38; _ -> P.error "wrong type"})) (Map.lookup (5) fields),
-  span_annotations = P.maybe (span_annotations default_Span) (\(_,_val34) -> (case _val34 of {T.TList _ _val39 -> (Vector.fromList $ P.map (\_v40 -> (case _v40 of {T.TStruct _val41 -> (to_Annotation (T.TStruct _val41)); _ -> P.error "wrong type"})) _val39); _ -> P.error "wrong type"})) (Map.lookup (6) fields),
-  span_binary_annotations = P.maybe (span_binary_annotations default_Span) (\(_,_val34) -> (case _val34 of {T.TList _ _val42 -> (Vector.fromList $ P.map (\_v43 -> (case _v43 of {T.TStruct _val44 -> (to_BinaryAnnotation (T.TStruct _val44)); _ -> P.error "wrong type"})) _val42); _ -> P.error "wrong type"})) (Map.lookup (8) fields),
-  span_debug = P.maybe (span_debug default_Span) (\(_,_val34) -> P.Just (case _val34 of {T.TBool _val45 -> _val45; _ -> P.error "wrong type"})) (Map.lookup (9) fields),
-  span_timestamp = P.maybe (P.Nothing) (\(_,_val34) -> P.Just (case _val34 of {T.TI64 _val46 -> _val46; _ -> P.error "wrong type"})) (Map.lookup (10) fields),
-  span_duration = P.maybe (P.Nothing) (\(_,_val34) -> P.Just (case _val34 of {T.TI64 _val47 -> _val47; _ -> P.error "wrong type"})) (Map.lookup (11) fields),
-  span_trace_id_high = P.maybe (P.Nothing) (\(_,_val34) -> P.Just (case _val34 of {T.TI64 _val48 -> _val48; _ -> P.error "wrong type"})) (Map.lookup (12) fields)
-  }
-to_Span _ = P.error "not a struct"
-read_Span :: T.Protocol p => p -> P.IO Span
-read_Span iprot = to_Span <$> T.readVal iprot (T.T_STRUCT typemap_Span)
-decode_Span :: T.StatelessProtocol p => p -> LBS.ByteString -> Span
-decode_Span iprot bs = to_Span $ T.deserializeVal iprot (T.T_STRUCT typemap_Span) bs
-typemap_Span :: T.TypeMap
-typemap_Span = Map.fromList [(1,("trace_id",T.T_I64)),(3,("name",T.T_STRING)),(4,("id",T.T_I64)),(5,("parent_id",T.T_I64)),(6,("annotations",(T.T_LIST (T.T_STRUCT typemap_Annotation)))),(8,("binary_annotations",(T.T_LIST (T.T_STRUCT typemap_BinaryAnnotation)))),(9,("debug",T.T_BOOL)),(10,("timestamp",T.T_I64)),(11,("duration",T.T_I64)),(12,("trace_id_high",T.T_I64))]
-default_Span :: Span
-default_Span = Span{
-  span_trace_id = 0,
-  span_name = "",
-  span_id = 0,
-  span_parent_id = P.Nothing,
-  span_annotations = Vector.empty,
-  span_binary_annotations = Vector.empty,
-  span_debug = P.Just P.False,
-  span_timestamp = P.Nothing,
-  span_duration = P.Nothing,
-  span_trace_id_high = P.Nothing}
diff --git a/gen-src/Zipkincore/Client.hs b/gen-src/Zipkincore/Client.hs
new file mode 100644
--- /dev/null
+++ b/gen-src/Zipkincore/Client.hs
@@ -0,0 +1,25 @@
+{-# LANGUAGE TypeFamilies, DeriveGeneric, TypeApplications, OverloadedLists, OverloadedStrings #-}
+{-# OPTIONS_GHC -fno-warn-unused-imports -fno-warn-name-shadowing -fno-warn-unused-matches #-}
+
+module Zipkincore.Client where
+
+import  Zipkincore.Types
+import qualified Pinch.Client
+import qualified Prelude
+import qualified Control.Applicative
+import qualified Control.Exception
+import qualified Pinch
+import qualified Pinch.Server
+import qualified Pinch.Internal.RPC
+import qualified Data.Text
+import qualified Data.ByteString
+import qualified Data.Int
+import qualified Data.Vector
+import qualified Data.HashMap.Strict
+import qualified Data.HashSet
+import qualified GHC.Generics
+import qualified Data.Hashable
+import  Data.Vector.Instances ()
+
+submitZipkinBatch :: ((Data.Vector.Vector Span)) -> (Pinch.Client.ThriftCall SubmitZipkinBatch_Result)
+submitZipkinBatch spans = Pinch.Client.TCall ("submitZipkinBatch") (SubmitZipkinBatch_Args (spans))
diff --git a/gen-src/Zipkincore/Server.hs b/gen-src/Zipkincore/Server.hs
new file mode 100644
--- /dev/null
+++ b/gen-src/Zipkincore/Server.hs
@@ -0,0 +1,30 @@
+{-# LANGUAGE TypeFamilies, DeriveGeneric, TypeApplications, OverloadedLists, OverloadedStrings #-}
+{-# OPTIONS_GHC -fno-warn-unused-imports -fno-warn-name-shadowing -fno-warn-unused-matches #-}
+
+module Zipkincore.Server where
+
+import  Zipkincore.Types
+import qualified Pinch.Server
+import qualified Prelude
+import qualified Control.Applicative
+import qualified Control.Exception
+import qualified Pinch
+import qualified Pinch.Server
+import qualified Pinch.Internal.RPC
+import qualified Data.Text
+import qualified Data.ByteString
+import qualified Data.Int
+import qualified Data.Vector
+import qualified Data.HashMap.Strict
+import qualified Data.HashSet
+import qualified GHC.Generics
+import qualified Data.Hashable
+import  Data.Vector.Instances ()
+
+data ZipkinCollector
+  = ZipkinCollector { submitZipkinBatch :: (Pinch.Server.Context) -> ((Data.Vector.Vector Span)) -> (Prelude.IO (Data.Vector.Vector Response)) }
+
+
+zipkinCollector_mkServer :: (ZipkinCollector) -> Pinch.Server.ThriftServer
+zipkinCollector_mkServer server = let functions =   Data.HashMap.Strict.fromList ([ ( "submitZipkinBatch"
+                                                      , Pinch.Server.CallHandler ((\ctx (SubmitZipkinBatch_Args a) -> Pinch.Internal.RPC.wrap @(SubmitZipkinBatch_Result) (submitZipkinBatch (server) (ctx) (a)))) ) ]) in Pinch.Server.createServer ((\nm -> Data.HashMap.Strict.lookup (nm) (functions)))
diff --git a/gen-src/Zipkincore/Types.hs b/gen-src/Zipkincore/Types.hs
new file mode 100644
--- /dev/null
+++ b/gen-src/Zipkincore/Types.hs
@@ -0,0 +1,209 @@
+{-# LANGUAGE TypeFamilies, DeriveGeneric, TypeApplications, OverloadedLists, OverloadedStrings #-}
+{-# OPTIONS_GHC -fno-warn-unused-imports -fno-warn-name-shadowing -fno-warn-unused-matches #-}
+
+module Zipkincore.Types where
+
+import qualified Prelude
+import qualified Control.Applicative
+import qualified Control.Exception
+import qualified Pinch
+import qualified Pinch.Server
+import qualified Pinch.Internal.RPC
+import qualified Data.Text
+import qualified Data.ByteString
+import qualified Data.Int
+import qualified Data.Vector
+import qualified Data.HashMap.Strict
+import qualified Data.HashSet
+import qualified GHC.Generics
+import qualified Data.Hashable
+import  Data.Vector.Instances ()
+
+cLIENT_SEND :: Data.Text.Text
+cLIENT_SEND = "cs"
+cLIENT_RECV :: Data.Text.Text
+cLIENT_RECV = "cr"
+sERVER_SEND :: Data.Text.Text
+sERVER_SEND = "ss"
+sERVER_RECV :: Data.Text.Text
+sERVER_RECV = "sr"
+mESSAGE_SEND :: Data.Text.Text
+mESSAGE_SEND = "ms"
+mESSAGE_RECV :: Data.Text.Text
+mESSAGE_RECV = "mr"
+wIRE_SEND :: Data.Text.Text
+wIRE_SEND = "ws"
+wIRE_RECV :: Data.Text.Text
+wIRE_RECV = "wr"
+cLIENT_SEND_FRAGMENT :: Data.Text.Text
+cLIENT_SEND_FRAGMENT = "csf"
+cLIENT_RECV_FRAGMENT :: Data.Text.Text
+cLIENT_RECV_FRAGMENT = "crf"
+sERVER_SEND_FRAGMENT :: Data.Text.Text
+sERVER_SEND_FRAGMENT = "ssf"
+sERVER_RECV_FRAGMENT :: Data.Text.Text
+sERVER_RECV_FRAGMENT = "srf"
+lOCAL_COMPONENT :: Data.Text.Text
+lOCAL_COMPONENT = "lc"
+cLIENT_ADDR :: Data.Text.Text
+cLIENT_ADDR = "ca"
+sERVER_ADDR :: Data.Text.Text
+sERVER_ADDR = "sa"
+mESSAGE_ADDR :: Data.Text.Text
+mESSAGE_ADDR = "ma"
+data Endpoint
+  = Endpoint { endpoint_ipv4 :: Data.Int.Int32, endpoint_port :: Data.Int.Int16, endpoint_service_name :: Data.Text.Text, endpoint_ipv6 :: (Prelude.Maybe Data.ByteString.ByteString) }
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable Endpoint where
+  type (Tag Endpoint) = Pinch.TStruct
+
+  pinch (Endpoint endpoint_ipv4 endpoint_port endpoint_service_name endpoint_ipv6) = Pinch.struct ([ (1 Pinch..= endpoint_ipv4), (2 Pinch..= endpoint_port), (3 Pinch..= endpoint_service_name), (4 Pinch.?= endpoint_ipv6) ])
+
+  unpinch value = ((((Prelude.pure (Endpoint) Prelude.<*> (value Pinch..: 1)) Prelude.<*> (value Pinch..: 2)) Prelude.<*> (value Pinch..: 3)) Prelude.<*> (value Pinch..:? 4))
+
+
+instance Data.Hashable.Hashable Endpoint where
+
+data Annotation
+  = Annotation { annotation_timestamp :: Data.Int.Int64, annotation_value :: Data.Text.Text, annotation_host :: (Prelude.Maybe Endpoint) }
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable Annotation where
+  type (Tag Annotation) = Pinch.TStruct
+
+  pinch (Annotation annotation_timestamp annotation_value annotation_host) = Pinch.struct ([ (1 Pinch..= annotation_timestamp), (2 Pinch..= annotation_value), (3 Pinch.?= annotation_host) ])
+
+  unpinch value = (((Prelude.pure (Annotation) Prelude.<*> (value Pinch..: 1)) Prelude.<*> (value Pinch..: 2)) Prelude.<*> (value Pinch..:? 3))
+
+
+instance Data.Hashable.Hashable Annotation where
+
+data AnnotationType
+  = BOOL
+  | BYTES
+  | I16
+  | I32
+  | I64
+  | DOUBLE
+  | STRING
+  deriving (Prelude.Eq, Prelude.Ord, GHC.Generics.Generic, Prelude.Show, Prelude.Bounded)
+
+instance Pinch.Pinchable AnnotationType where
+  type (Tag AnnotationType) = Pinch.TEnum
+
+  pinch BOOL = Pinch.pinch ((0 :: Data.Int.Int32))
+  pinch BYTES = Pinch.pinch ((1 :: Data.Int.Int32))
+  pinch I16 = Pinch.pinch ((2 :: Data.Int.Int32))
+  pinch I32 = Pinch.pinch ((3 :: Data.Int.Int32))
+  pinch I64 = Pinch.pinch ((4 :: Data.Int.Int32))
+  pinch DOUBLE = Pinch.pinch ((5 :: Data.Int.Int32))
+  pinch STRING = Pinch.pinch ((6 :: Data.Int.Int32))
+
+  unpinch v = do
+    val <- Pinch.unpinch (v)
+    case (val :: Data.Int.Int32) of
+      0 -> Prelude.pure (BOOL)
+      1 -> Prelude.pure (BYTES)
+      2 -> Prelude.pure (I16)
+      3 -> Prelude.pure (I32)
+      4 -> Prelude.pure (I64)
+      5 -> Prelude.pure (DOUBLE)
+      6 -> Prelude.pure (STRING)
+      _ -> Prelude.fail (("Unknown value for type AnnotationType: " Prelude.<> Prelude.show (val)))
+
+
+instance Prelude.Enum AnnotationType where
+  fromEnum BOOL = 0
+  fromEnum BYTES = 1
+  fromEnum I16 = 2
+  fromEnum I32 = 3
+  fromEnum I64 = 4
+  fromEnum DOUBLE = 5
+  fromEnum STRING = 6
+
+  toEnum 0 = BOOL
+  toEnum 1 = BYTES
+  toEnum 2 = I16
+  toEnum 3 = I32
+  toEnum 4 = I64
+  toEnum 5 = DOUBLE
+  toEnum 6 = STRING
+  toEnum _ = Prelude.error ("Unknown value for enum AnnotationType.")
+
+
+instance Data.Hashable.Hashable AnnotationType where
+
+data BinaryAnnotation
+  = BinaryAnnotation { binaryAnnotation_key :: Data.Text.Text, binaryAnnotation_value :: Data.ByteString.ByteString, binaryAnnotation_annotation_type :: AnnotationType, binaryAnnotation_host :: (Prelude.Maybe Endpoint) }
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable BinaryAnnotation where
+  type (Tag BinaryAnnotation) = Pinch.TStruct
+
+  pinch (BinaryAnnotation binaryAnnotation_key binaryAnnotation_value binaryAnnotation_annotation_type binaryAnnotation_host) = Pinch.struct ([ (1 Pinch..= binaryAnnotation_key), (2 Pinch..= binaryAnnotation_value), (3 Pinch..= binaryAnnotation_annotation_type), (4 Pinch.?= binaryAnnotation_host) ])
+
+  unpinch value = ((((Prelude.pure (BinaryAnnotation) Prelude.<*> (value Pinch..: 1)) Prelude.<*> (value Pinch..: 2)) Prelude.<*> (value Pinch..: 3)) Prelude.<*> (value Pinch..:? 4))
+
+
+instance Data.Hashable.Hashable BinaryAnnotation where
+
+data Span
+  = Span { span_trace_id :: Data.Int.Int64, span_name :: Data.Text.Text, span_id :: Data.Int.Int64, span_parent_id :: (Prelude.Maybe Data.Int.Int64), span_annotations :: (Data.Vector.Vector Annotation), span_binary_annotations :: (Data.Vector.Vector BinaryAnnotation), span_debug :: (Prelude.Maybe Prelude.Bool), span_timestamp :: (Prelude.Maybe Data.Int.Int64), span_duration :: (Prelude.Maybe Data.Int.Int64), span_trace_id_high :: (Prelude.Maybe Data.Int.Int64) }
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable Span where
+  type (Tag Span) = Pinch.TStruct
+
+  pinch (Span span_trace_id span_name span_id span_parent_id span_annotations span_binary_annotations span_debug span_timestamp span_duration span_trace_id_high) = Pinch.struct ([ (1 Pinch..= span_trace_id), (3 Pinch..= span_name), (4 Pinch..= span_id), (5 Pinch.?= span_parent_id), (6 Pinch..= span_annotations), (8 Pinch..= span_binary_annotations), (9 Pinch.?= span_debug), (10 Pinch.?= span_timestamp), (11 Pinch.?= span_duration), (12 Pinch.?= span_trace_id_high) ])
+
+  unpinch value = ((((((((((Prelude.pure (Span) Prelude.<*> (value Pinch..: 1)) Prelude.<*> (value Pinch..: 3)) Prelude.<*> (value Pinch..: 4)) Prelude.<*> (value Pinch..:? 5)) Prelude.<*> (value Pinch..: 6)) Prelude.<*> (value Pinch..: 8)) Prelude.<*> (value Pinch..:? 9)) Prelude.<*> (value Pinch..:? 10)) Prelude.<*> (value Pinch..:? 11)) Prelude.<*> (value Pinch..:? 12))
+
+
+instance Data.Hashable.Hashable Span where
+
+data Response
+  = Response { response_ok :: Prelude.Bool }
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable Response where
+  type (Tag Response) = Pinch.TStruct
+
+  pinch (Response response_ok) = Pinch.struct ([ (1 Pinch..= response_ok) ])
+
+  unpinch value = (Prelude.pure (Response) Prelude.<*> (value Pinch..: 1))
+
+
+instance Data.Hashable.Hashable Response where
+
+data SubmitZipkinBatch_Args
+  = SubmitZipkinBatch_Args { submitZipkinBatch_Args_spans :: (Data.Vector.Vector Span) }
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable SubmitZipkinBatch_Args where
+  type (Tag SubmitZipkinBatch_Args) = Pinch.TStruct
+
+  pinch (SubmitZipkinBatch_Args submitZipkinBatch_Args_spans) = Pinch.struct ([ (1 Pinch..= submitZipkinBatch_Args_spans) ])
+
+  unpinch value = (Prelude.pure (SubmitZipkinBatch_Args) Prelude.<*> (value Pinch..: 1))
+
+
+instance Pinch.Internal.RPC.ThriftResult SubmitZipkinBatch_Result where
+  type (ResultType SubmitZipkinBatch_Result) = (Data.Vector.Vector Response)
+
+  unwrap (SubmitZipkinBatch_Result_Success x) = Prelude.pure (x)
+
+  wrap m = Control.Exception.catches ((SubmitZipkinBatch_Result_Success Prelude.<$> m)) ([  ])
+
+
+data SubmitZipkinBatch_Result
+  = SubmitZipkinBatch_Result_Success (Data.Vector.Vector Response)
+  deriving (Prelude.Eq, GHC.Generics.Generic, Prelude.Show)
+
+instance Pinch.Pinchable SubmitZipkinBatch_Result where
+  type (Tag SubmitZipkinBatch_Result) = Pinch.TUnion
+
+  pinch (SubmitZipkinBatch_Result_Success x) = Pinch.union (0) (x)
+
+  unpinch v = (Control.Applicative.empty Control.Applicative.<|> (SubmitZipkinBatch_Result_Success Prelude.<$> (v Pinch..: 0)))
+
diff --git a/opentracing-zipkin-v1.cabal b/opentracing-zipkin-v1.cabal
--- a/opentracing-zipkin-v1.cabal
+++ b/opentracing-zipkin-v1.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.2
 
 name:           opentracing-zipkin-v1
-version:        0.1.0.0
+version:        0.2.0
 synopsis:       Zipkin V1 backend for OpenTracing
 homepage:       https://github.com/kim/opentracing
 bug-reports:    https://github.com/kim/opentracing/issues
@@ -25,8 +25,9 @@
       OpenTracing.Zipkin.V1.HttpReporter
       OpenTracing.Zipkin.V1.Thrift
   other-modules:
-      ZipkinCore_Consts
-      ZipkinCore_Types
+      Zipkincore.Client
+      Zipkincore.Server
+      Zipkincore.Types
   hs-source-dirs:
       src
       gen-src
@@ -49,8 +50,9 @@
     , lens >= 4.19
     , opentracing >= 0.1
     , opentracing-zipkin-common >= 0.1
+    , pinch >= 0.4.0.0
     , text >= 1.2
-    , thrift == 0.13.0
     , unordered-containers >= 0.2
     , vector >= 0.12
+    , vector-instances
   default-language: Haskell2010
diff --git a/src/OpenTracing/Zipkin/V1/HttpReporter.hs b/src/OpenTracing/Zipkin/V1/HttpReporter.hs
--- a/src/OpenTracing/Zipkin/V1/HttpReporter.hs
+++ b/src/OpenTracing/Zipkin/V1/HttpReporter.hs
@@ -37,7 +37,7 @@
 import Control.Monad.Catch
 import Control.Monad.IO.Class
 import Data.ByteString.Builder
-import Data.Monoid
+import Data.ByteString.Lazy         (fromStrict)
 import Network.HTTP.Client          hiding (port)
 import Network.HTTP.Types
 import OpenTracing.Log
@@ -115,6 +115,7 @@
                     <> char8 '\n'
   where
     body = RequestBodyLBS
+         . fromStrict
          . thriftEncodeSpans
          . map (toThriftSpan _zoLocalEndpoint _zoLogfmt)
          $ spans
diff --git a/src/OpenTracing/Zipkin/V1/Thrift.hs b/src/OpenTracing/Zipkin/V1/Thrift.hs
--- a/src/OpenTracing/Zipkin/V1/Thrift.hs
+++ b/src/OpenTracing/Zipkin/V1/Thrift.hs
@@ -18,6 +18,7 @@
 import           Data.Bifunctor
 import           Data.Bits
 import           Data.ByteString.Builder
+import           Data.ByteString          (ByteString)
 import qualified Data.ByteString.Lazy     as Lazy
 import           Data.ByteString.Lens
 import           Data.Foldable            (foldl', toList)
@@ -25,8 +26,7 @@
 import           Data.Int
 import qualified Data.IP                  as IP
 import           Data.List.NonEmpty       (NonEmpty (..))
-import           Data.Semigroup           ((<>))
-import           Data.Text.Lazy.Encoding  (decodeUtf8, encodeUtf8)
+import           Data.Text.Encoding       (decodeUtf8, encodeUtf8)
 import qualified Data.Vector              as Vector
 import           OpenTracing.Log
 import           OpenTracing.Span
@@ -34,12 +34,8 @@
 import           OpenTracing.Time
 import           OpenTracing.Types
 import           OpenTracing.Zipkin.Types (Endpoint (..))
-import qualified Thrift
-import           Thrift.Protocol.Binary
-import           Thrift.Transport.Empty
-import           Thrift.Types
-import qualified ZipkinCore_Consts        as Thrift
-import           ZipkinCore_Types
+import qualified Pinch
+import           Zipkincore.Types
     ( Annotation (..)
     , BinaryAnnotation (..)
     , Span (..)
@@ -48,7 +44,7 @@
     , endpoint_port
     , endpoint_service_name
     )
-import qualified ZipkinCore_Types         as Thrift
+import qualified Zipkincore.Types         as Thrift
 
 
 toThriftSpan
@@ -59,7 +55,7 @@
 toThriftSpan (toThriftEndpoint -> loc) logfmt s = Thrift.Span
     { span_trace_id           = view (spanContext . to traceIdLo') s
     , span_trace_id_high      = view (spanContext . to traceIdHi') s
-    , span_name               = view (spanOperation . lazy) s
+    , span_name               = view spanOperation s
     , span_id                 = view (spanContext . to ctxSpanID') s
     , span_parent_id          = view (spanContext . to ctxParentSpanID') s
     , span_annotations        = annotations
@@ -94,7 +90,7 @@
         go acc (k,v) =
             let (anntyp, annval) = toThriftTag v
                 ann              = Thrift.BinaryAnnotation
-                    { binaryAnnotation_key             = view lazy k
+                    { binaryAnnotation_key             = k
                     , binaryAnnotation_value           = annval
                     , binaryAnnotation_annotation_type = anntyp
                     , binaryAnnotation_host            = Just loc
@@ -118,36 +114,31 @@
             { annotation_timestamp = micros t
             , annotation_host      = Just loc
             , annotation_value     = case fs of
-                  (Event x :| []) -> view lazy x -- proper zipkin annotation
-                  fields          -> decodeUtf8 . toLazyByteString $ logfmt fields
+                  (Event x :| []) -> x -- proper zipkin annotation
+                  fields          -> decodeUtf8 . Lazy.toStrict . toLazyByteString $ logfmt fields
             }
             : acc
 
-thriftEncodeSpan :: Thrift.Span -> Lazy.ByteString
-thriftEncodeSpan = Thrift.encode_Span (BinaryProtocol EmptyTransport)
+thriftEncodeSpan :: Thrift.Span -> ByteString
+thriftEncodeSpan = Pinch.encode Pinch.binaryProtocol
 
-thriftEncodeSpans :: Traversable t => t Thrift.Span -> Lazy.ByteString
+thriftEncodeSpans :: Traversable t => t Thrift.Span -> ByteString
 thriftEncodeSpans
-    = thriftEncodeVal
-    . TList (T_STRUCT Thrift.typemap_Span)
-    . toList
-    . fmap Thrift.from_Span
-
-thriftEncodeVal :: ThriftVal -> Lazy.ByteString
-thriftEncodeVal = Thrift.serializeVal (BinaryProtocol EmptyTransport)
+     = Pinch.encode Pinch.binaryProtocol
+     . toList
 
-toThriftTag :: TagVal -> (Thrift.AnnotationType, Lazy.ByteString)
+toThriftTag :: TagVal -> (Thrift.AnnotationType, ByteString)
 toThriftTag (BoolT   v) = (Thrift.BOOL, if v then "1" else "0")
-toThriftTag (StringT v) = (Thrift.STRING, view (lazy . to encodeUtf8) v)
-toThriftTag (IntT    v) = (Thrift.I64, toLazyByteString . int64BE $ v)
-toThriftTag (DoubleT v) = (Thrift.DOUBLE, toLazyByteString . doubleBE $ v)
-toThriftTag (BinaryT v) = (Thrift.BYTES, v)
+toThriftTag (StringT v) = (Thrift.STRING, view (to encodeUtf8) v)
+toThriftTag (IntT    v) = (Thrift.I64, Lazy.toStrict . toLazyByteString . int64BE $ v)
+toThriftTag (DoubleT v) = (Thrift.DOUBLE, Lazy.toStrict . toLazyByteString . doubleBE $ v)
+toThriftTag (BinaryT v) = (Thrift.BYTES, Lazy.toStrict v)
 
 toThriftEndpoint :: Endpoint -> Thrift.Endpoint
 toThriftEndpoint Endpoint{..} = Thrift.Endpoint
     { endpoint_ipv4         = packIPv4 $ fromIPv4 ipv4
     , endpoint_port         = maybe 0 (fromIntegral . fromPort) port
-    , endpoint_service_name = view lazy serviceName
+    , endpoint_service_name = serviceName
     , endpoint_ipv6         = packIPv6 . fromIPv6 <$> ipv6
     }
   where
@@ -156,7 +147,7 @@
         let [a,b,c,d] = IP.fromIPv4 ip
          in fromIntegral $ a `shiftL` 24 .|. b `shiftL` 16 .|. c `shiftL` 8 .|. d
 
-    packIPv6 :: IP.IPv6 -> Lazy.ByteString
+    packIPv6 :: IP.IPv6 -> ByteString
     packIPv6 = view packedBytes . map fromIntegral . IP.fromIPv6b
 
 
