diff --git a/invariant.cabal b/invariant.cabal
--- a/invariant.cabal
+++ b/invariant.cabal
@@ -1,5 +1,5 @@
 name: invariant
-version: 0.1.0
+version: 0.1.1
 synopsis: Haskell 98 invariant functors
 description: Haskell 98 invariant functors
 
@@ -17,6 +17,6 @@
 
 library
   build-depends: base >= 4 && < 5
-  build-depends: contravariant >= 0.1.2 && < 0.3
+  build-depends: contravariant >= 0.1.2 && < 2.0
 
   exposed-modules: Data.Functor.Invariant