diff --git a/example/Main.hs b/example/Main.hs
index 725a366..83eb08a 100644
--- a/example/Main.hs
+++ b/example/Main.hs
@@ -31,5 +31,5 @@ main = do
       Right expr -> putStrLn "Roundtrip successful!" >> print expr
 
   where testExpr = mkList [ mkInt n | n <- [1..10] ]
-        env m = ClientEnv m url Nothing
+        env m = mkClientEnv m url
         url   = BaseUrl Http "localhost" 8080 ""
diff --git a/servant-nix.cabal b/servant-nix.cabal
index ae14164..497d3be 100644
--- a/servant-nix.cabal
+++ b/servant-nix.cabal
@@ -30,12 +30,12 @@ source-repository head
 
 library
   exposed-modules:     Servant.Nix
-  build-depends:       base          >=4.8      && <4.12
+  build-depends:       base          >=4.8      && <4.16
                      , bytestring    >=0.10.4.0 && <0.11
-                     , servant       >=0.13     && <0.17
+                     , servant       >=0.13     && <0.19
                      , text          >=1.2.3.0  && <1.3
-                     , http-media    >= 0.7     && <0.8
-                     , hnix          >= 0.5     && <0.6
+                     , http-media    >= 0.7     && <0.9
+                     , hnix          >= 0.5     && <0.13
   hs-source-dirs:      src
   default-language:    Haskell2010
   ghc-options: -Wall