diff --git a/Mail/Hailgun/Communication.hs b/Mail/Hailgun/Communication.hs
--- a/Mail/Hailgun/Communication.hs
+++ b/Mail/Hailgun/Communication.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE CPP #-}
+
 module Mail.Hailgun.Communication
     ( getRequest
     , postRequest
@@ -27,13 +29,26 @@
 getRequest :: (MonadThrow m) => String -> HailgunContext -> [(BC.ByteString, Maybe BC.ByteString)] -> m NC.Request
 getRequest url context queryParams = do
    initRequest <- NC.parseUrl url
-   let request = appEndo (applyHailgunAuth context) $ initRequest { NC.method = NM.methodGet, NC.checkStatus = ignoreStatus }
+   let request = appEndo (applyHailgunAuth context) $
+         initRequest
+            { NC.method = NM.methodGet
+#if MIN_VERSION_http_client(0,5,0)
+#else
+            , NC.checkStatus = ignoreStatus
+#endif
+            }
    return $ NC.setQueryString queryParams request
 
 postRequest :: (MonadThrow m, MonadIO m) => String -> HailgunContext -> [Part] -> m NC.Request
 postRequest url context parts = do
    initRequest <- NC.parseUrl url
-   let request = initRequest { NC.method = NM.methodPost, NC.checkStatus = ignoreStatus }
+   let request = initRequest
+         { NC.method = NM.methodPost
+#if MIN_VERSION_http_client(0,5,0)
+#else
+         , NC.checkStatus = ignoreStatus
+#endif
+         }
    requestWithBody <- formDataBody parts request
    --requestWithBody <- encodeFormData formParams request
    return $ appEndo (applyHailgunAuth context) requestWithBody
diff --git a/hailgun.cabal b/hailgun.cabal
--- a/hailgun.cabal
+++ b/hailgun.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.4.1.0
+version:             0.4.1.1
 
 -- A short (one-line) description of the package.
 synopsis:            Mailgun REST api interface for Haskell.
@@ -71,11 +71,11 @@
 
    build-depends:         base               >= 4.6 && < 5
                         , bytestring         >= 0.10.4 && <= 0.11
-                        , aeson              >= 0.8 && < 0.12
+                        , aeson              >= 0.8 && < 1.1
                         , text               == 1.2.*
                         , transformers       >= 0.3 && < 0.6
-                        , http-client        == 0.4.*
-                        , http-client-tls    == 0.2.*
+                        , http-client        >= 0.4 && < 0.6
+                        , http-client-tls    >= 0.2 && < 0.4
                         , email-validate     >= 2.0 && <2.3
                         , http-types         >= 0.8 && < 0.10
                         , exceptions         == 0.8.*