diff --git a/pipes-group.cabal b/pipes-group.cabal
--- a/pipes-group.cabal
+++ b/pipes-group.cabal
@@ -1,5 +1,5 @@
 Name: pipes-group
-Version: 1.0.11
+Version: 1.0.12
 Cabal-Version: >=1.10
 Build-Type: Simple
 License: BSD3
@@ -29,7 +29,7 @@
     Default-Language: Haskell2010
     Build-Depends:
         base         >= 4       && < 5  ,
-        free         >= 3.2     && < 5.1,
+        free         >= 3.2     && < 5.2,
         pipes        >= 4.0     && < 4.4,
         pipes-parse  >= 3.0.0   && < 3.1,
         transformers >= 0.2.0.0 && < 0.6