diff --git a/json-rpc-generic.cabal b/json-rpc-generic.cabal
--- a/json-rpc-generic.cabal
+++ b/json-rpc-generic.cabal
@@ -1,5 +1,5 @@
 name:                json-rpc-generic
-version:             0.2.1.2
+version:             0.2.1.3
 synopsis:            Generic encoder and decode for JSON-RPC
 description:         This package contains generic encoder and decode for JSON-RPC
 homepage:            http://github.com/khibino/haskell-json-rpc-generic
@@ -7,12 +7,13 @@
 license-file:        LICENSE
 author:              Kei Hibino
 maintainer:          ex8k.hibino@gmail.com
-copyright:           Copyright (c) 2016 Kei Hibino
+copyright:           Copyright (c) 2016-2017 Kei Hibino
 category:            Network
 build-type:          Simple
 -- extra-source-files:
 cabal-version:       >=1.10
-tested-with:           GHC == 8.0.1
+tested-with:           GHC == 8.2.1, GHC == 8.2.2
+                     , GHC == 8.0.1, GHC == 8.0.2
                      , GHC == 7.10.1, GHC == 7.10.2, GHC == 7.10.3
                      , GHC == 7.8.1, GHC == 7.8.2, GHC == 7.8.3, GHC == 7.8.4
                      , GHC == 7.6.1, GHC == 7.6.2, GHC == 7.6.3
diff --git a/src/Data/JsonRpc/Generic.hs b/src/Data/JsonRpc/Generic.hs
--- a/src/Data/JsonRpc/Generic.hs
+++ b/src/Data/JsonRpc/Generic.hs
@@ -24,7 +24,7 @@
 import qualified Data.HashMap.Strict as HashMap
 import qualified Data.Text as T
 import Data.Aeson.Types
-  (FromJSON (..), ToJSON (..), GFromJSON, genericParseJSON, Parser, Options (..), Value (..))
+  (FromJSON (..), ToJSON (..), genericParseJSON, Parser, Options (..), Value (..))
 import Data.Aeson.Generic.Compat (GFromJSON0)
 import Data.Vector (Vector)
 import qualified Data.Vector as Vector