diff --git a/syb-extras.cabal b/syb-extras.cabal
--- a/syb-extras.cabal
+++ b/syb-extras.cabal
@@ -1,6 +1,6 @@
 name:          syb-extras
 category:      Polymorphism, Combinators, Generic
-version:       0.2.1
+version:       0.2.1.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -19,7 +19,7 @@
 
 library
   build-depends: 
-    base >= 4 && < 4.4,
+    base >= 4 && < 5,
     prelude-extras >= 0.1 && < 0.3,
     eq >= 0.3.2 && <= 0.4