diff --git a/Data/Constraint.hs b/Data/Constraint.hs
--- a/Data/Constraint.hs
+++ b/Data/Constraint.hs
@@ -324,7 +324,9 @@
 unmapDict :: (Dict a -> Dict b) -> a :- b
 unmapDict f = Sub (f Dict)
 
+#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 707
 type role Dict nominal
+#endif
 
 --------------------------------------------------------------------------------
 -- Reflection
diff --git a/constraints.cabal b/constraints.cabal
--- a/constraints.cabal
+++ b/constraints.cabal
@@ -1,6 +1,6 @@
 name:          constraints
 category:      Constraints
-version:       0.4.1.1
+version:       0.4.1.2
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE