diff --git a/monoids.cabal b/monoids.cabal
--- a/monoids.cabal
+++ b/monoids.cabal
@@ -1,5 +1,5 @@
 name:		    monoids
-version:	    0.1.19
+version:	    0.1.20
 license:	    BSD3
 license-file:   LICENSE
 author:		    Edward A. Kmett
@@ -28,7 +28,7 @@
     bitset >= 1.0 && < 1.1, 
     QuickCheck >= 2.1 && < 2.2, 
     array >= 0.2 && < 0.3,
-    reflection >= 0.0 && < 0.1
+    reflection >= 0.1 && < 0.2
   exposed-modules:
     Data.Group
     Data.Group.Combinators