diff --git a/servant-client/servant-client.cabal b/servant-client/servant-client.cabal
index c49cfe0e..3b8e521e 100644
--- a/servant-client/servant-client.cabal
+++ b/servant-client/servant-client.cabal
@@ -53,6 +53,7 @@ library
     , text                  >= 1.2      && < 1.3
     , transformers          >= 0.3      && < 0.6
     , transformers-compat   >= 0.4      && < 0.6
+    , http-conduit
     , mtl
   hs-source-dirs: src
   default-language: Haskell2010
diff --git a/servant-client/src/Servant/Common/Req.hs b/servant-client/src/Servant/Common/Req.hs
index aa6226cf..a6ec7b0d 100644
--- a/servant-client/src/Servant/Common/Req.hs
+++ b/servant-client/src/Servant/Common/Req.hs
@@ -21,6 +21,13 @@ import Control.Monad.Error.Class (MonadError(..))
 #endif
 import Control.Monad.Trans.Except
 
+#if MIN_VERSION_http_client(0,4,19)
+import Network.HTTP.Client ( HasHttpManager )
+#else
+import Network.HTTP.Client.Conduit ( HasHttpManager(getHttpManager) )
+#endif
+
+
 import GHC.Generics
 import Control.Monad.IO.Class ()
 import Control.Monad.Reader