diff --git a/synthesizer-core.cabal b/synthesizer-core.cabal
--- a/synthesizer-core.cabal
+++ b/synthesizer-core.cabal
@@ -1,5 +1,5 @@
 Name:           synthesizer-core
-Version:        0.8.1
+Version:        0.8.1.1
 License:        GPL
 License-File:   LICENSE
 Author:         Henning Thielemann <haskell@henning-thielemann.de>
@@ -38,7 +38,7 @@
 
 
 Source-Repository this
-  Tag:         0.8.1
+  Tag:         0.8.1.1
   Type:        darcs
   Location:    http://code.haskell.org/synthesizer/core/
 
@@ -69,7 +69,7 @@
     array >=0.1 && <0.6,
     containers >=0.1 && <0.6,
     random >=1.0 && <2.0,
-    process >=1.0 && <1.5,
+    process >=1.0 && <1.7,
     base >= 4 && <5
 
   If impl(ghc>=7.0)