diff --git a/haskore-synthesizer.cabal b/haskore-synthesizer.cabal
--- a/haskore-synthesizer.cabal
+++ b/haskore-synthesizer.cabal
@@ -1,5 +1,5 @@
 Name:           haskore-synthesizer
-Version:        0.0.3.2
+Version:        0.0.3.3
 License:        GPL
 License-File:   LICENSE
 Author:         Henning Thielemann <haskell@henning-thielemann.de>
@@ -23,7 +23,7 @@
   default:     False
 
 Source-Repository this
-  Tag:         0.0.3.2
+  Tag:         0.0.3.3
   Type:        darcs
   Location:    http://code.haskell.org/haskore/revised/synthesizer/
 
@@ -34,7 +34,7 @@
 Library
   Build-Depends:
     synthesizer-filter >=0.4 && <0.5,
-    synthesizer-core >= 0.4 && < 0.8,
+    synthesizer-core >= 0.4 && < 0.9,
     haskore >=0.1 && <0.3,
     numeric-prelude >=0.2 && <0.5,
     -- dependency on non-negative for Haddock