diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# log-elasticsearch-0.10.0.1 (2019-01-14)
+* Compatibility with ES 6.x by using "text" instead of deprecated "string"
+
 # log-elasticsearch-0.10.0.0 (2018-03-28)
 * Expose `checkElasticSearchConnection` and `checkElasticSearchLogin`.
 * Add config parameters for number of shards and replicas to
diff --git a/Setup.hs b/Setup.hs
deleted file mode 100644
--- a/Setup.hs
+++ /dev/null
@@ -1,2 +0,0 @@
-import Distribution.Simple
-main = defaultMain
diff --git a/log-elasticsearch.cabal b/log-elasticsearch.cabal
--- a/log-elasticsearch.cabal
+++ b/log-elasticsearch.cabal
@@ -1,5 +1,5 @@
 name:                log-elasticsearch
-version:             0.10.0.0
+version:             0.10.0.1
 synopsis:            Structured logging solution (Elasticsearch back end)
 
 description:         Elasticsearch back end for the 'log' library suite.
@@ -18,7 +18,8 @@
 build-type:          Simple
 cabal-version:       >=1.10
 extra-source-files:  CHANGELOG.md, README.md
-tested-with:         GHC == 7.10.3, GHC == 8.0.2, GHC == 8.2.1
+tested-with:         GHC == 7.10.3, GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.4,
+                     GHC == 8.6.2
 
 Source-repository head
   Type:     git
@@ -40,7 +41,7 @@
                        aeson-pretty >=0.8.2,
                        bytestring,
                        base64-bytestring,
-                       bloodhound >= 0.13 && < 0.16,
+                       bloodhound >= 0.13 && < 0.17,
                        deepseq,
                        http-client,
                        http-client-tls,
diff --git a/src/Log/Backend/ElasticSearch/V1.hs b/src/Log/Backend/ElasticSearch/V1.hs
--- a/src/Log/Backend/ElasticSearch/V1.hs
+++ b/src/Log/Backend/ElasticSearch/V1.hs
@@ -274,7 +274,7 @@
 
 -- | Check that login credentials are specified properly.
 --
--- @since 0.10.1.0
+-- @since 0.10.0.0
 checkElasticSearchLogin :: ElasticSearchConfig -> IO (Either IOException ())
 checkElasticSearchLogin ElasticSearchConfig{..} =
   try $
@@ -287,7 +287,7 @@
 
 -- | Check that we can connect to the ES server.
 --
--- @since 0.10.1.0
+-- @since 0.10.0.0
 checkElasticSearchConnection :: ElasticSearchConfig -> IO (Either HttpException ())
 checkElasticSearchConnection esConf =
     try (void $ runBH_ esConf listIndices)
diff --git a/src/Log/Backend/ElasticSearch/V5.hs b/src/Log/Backend/ElasticSearch/V5.hs
--- a/src/Log/Backend/ElasticSearch/V5.hs
+++ b/src/Log/Backend/ElasticSearch/V5.hs
@@ -218,16 +218,16 @@
           , "format" .= ("date_time"::T.Text)
           ]
         , "domain" .= object [
-            "type" .= ("string"::T.Text)
+            "type" .= ("text"::T.Text)
           ]
         , "level" .= object [
-            "type" .= ("string"::T.Text)
+            "type" .= ("text"::T.Text)
           ]
         , "component" .= object [
-            "type" .= ("string"::T.Text)
+            "type" .= ("text"::T.Text)
           ]
         , "message" .= object [
-            "type" .= ("string"::T.Text)
+            "type" .= ("text"::T.Text)
           ]
         ]
     ]
@@ -246,16 +246,16 @@
         , "format" .= ("date_time"::T.Text)
         ]
       , Aeson.pair "domain" $ Aeson.pairs $ mconcat
-        [ "type" .= ("string"::T.Text)
+        [ "type" .= ("text"::T.Text)
         ]
       , Aeson.pair "level" $ Aeson.pairs $ mconcat
-        [ "type" .= ("string"::T.Text)
+        [ "type" .= ("text"::T.Text)
         ]
       , Aeson.pair "component" $ Aeson.pairs $ mconcat
-        [ "type" .= ("string"::T.Text)
+        [ "type" .= ("text"::T.Text)
         ]
       , Aeson.pair "message" $ Aeson.pairs $ mconcat
-        [ "type" .= ("string"::T.Text)
+        [ "type" .= ("text"::T.Text)
         ]
       ]
     ]
@@ -274,7 +274,7 @@
 
 -- | Check that login credentials are specified properly.
 --
--- @since 0.10.1.0
+-- @since 0.10.0.0
 checkElasticSearchLogin :: ElasticSearchConfig -> IO (Either IOException ())
 checkElasticSearchLogin ElasticSearchConfig{..} =
   try $
@@ -287,7 +287,7 @@
 
 -- | Check that we can connect to the ES server.
 --
--- @since 0.10.1.0
+-- @since 0.10.0.0
 checkElasticSearchConnection :: ElasticSearchConfig -> IO (Either HttpException ())
 checkElasticSearchConnection esConf =
     try (void $ runBH_ esConf listIndices)
diff --git a/src/Log/Backend/ElasticSearch/V5/Internal.hs b/src/Log/Backend/ElasticSearch/V5/Internal.hs
--- a/src/Log/Backend/ElasticSearch/V5/Internal.hs
+++ b/src/Log/Backend/ElasticSearch/V5/Internal.hs
@@ -15,15 +15,20 @@
 data ElasticSearchConfig = ElasticSearchConfig {
     esServer        :: !T.Text -- ^ Elasticsearch server address.
   , esIndex         :: !T.Text -- ^ Elasticsearch index name.
-  , esShardCount    :: !Int    -- ^ Elasticsearch shard count for the named index.
-                               --
-                               -- @since 0.10.0.0
-  , esReplicaCount  :: !Int    -- ^ Elasticsearch replica count for the named index.
-                               --
-                               -- @since 0.10.0.0
-  , esMapping       :: !T.Text -- ^ Elasticsearch mapping name.
-  , esLogin         :: Maybe (EsUsername, EsPassword) -- ^ Elasticsearch basic authentication username and password.
-  , esLoginInsecure :: !Bool   -- ^ Allow basic authentication over non-TLS connections.
+  , esShardCount    :: !Int
+    -- ^ Elasticsearch shard count for the named index.
+    --
+    -- @since 0.10.0.0
+  , esReplicaCount  :: !Int
+    -- ^ Elasticsearch replica count for the named index.
+    --
+    -- @since 0.10.0.0
+  , esMapping       :: !T.Text
+    -- ^ Elasticsearch mapping name.
+  , esLogin         :: Maybe (EsUsername, EsPassword)
+    -- ^ Elasticsearch basic authentication username and password.
+  , esLoginInsecure :: !Bool
+    -- ^ Allow basic authentication over non-TLS connections.
   } deriving (Eq, Show)
 
 -- | Sensible defaults for 'ElasticSearchConfig'.