--- a/concurrent-supply.cabal
+++ b/concurrent-supply.cabal
@@ -35,7 +35,7 @@ library
   ghc-options: -Wall
   build-depends:
     base     >= 4 && < 5,
-    hashable >= 1.1 && < 1.3,
+    hashable >= 1.1 && < 1.4,
     ghc-prim
 
 test-suite properties
