diff --git a/Annotations.cabal b/Annotations.cabal
--- a/Annotations.cabal
+++ b/Annotations.cabal
@@ -1,5 +1,5 @@
 Name:           Annotations
-Version:        0.1
+Version:        0.1.1
 Synopsis:       Constructing, analyzing and destructing annotated trees
 Description:
   @Annotations@ provides utility functions to make working with annotated trees easier. There are two implementations: one for working with open datatypes that explicitly make their child positions accessible through a type argument, and one for working with MultiRec datatypes.
@@ -19,7 +19,7 @@
 Build-type:     Simple
 
 Library
-  Build-Depends:    base >= 4.1 && < 4.2, mtl >= 1.1 && < 1.2,
+  Build-Depends:    base >= 4.1 && < 4.3, mtl >= 1.1 && < 1.2,
                     parsec >= 3.0 && < 3.1, multirec >= 0.4 && < 0.5
   Exposed-Modules:  Annotations.Bounds,
                     Annotations.BoundsParser,