diff --git a/synthesizer-dimensional.cabal b/synthesizer-dimensional.cabal
--- a/synthesizer-dimensional.cabal
+++ b/synthesizer-dimensional.cabal
@@ -1,5 +1,5 @@
 Name:           synthesizer-dimensional
-Version:        0.8.1
+Version:        0.8.1.1
 License:        GPL
 License-File:   LICENSE
 Author:         Henning Thielemann <haskell@henning-thielemann.de>
@@ -33,14 +33,14 @@
   Location:    http://code.haskell.org/synthesizer/dimensional/
 
 Source-Repository this
-  Tag:         0.8.1
+  Tag:         0.8.1.1
   Type:        darcs
   Location:    http://code.haskell.org/synthesizer/dimensional/
 
 Library
   Build-Depends:
     synthesizer-core >=0.8.1 && <0.9,
-    transformers >=0.2 && <0.6,
+    transformers >=0.2 && <0.7,
     semigroups >=0.1 && <1.0,
     event-list >=0.1 && <0.2,
     non-negative >=0.1 && <0.2,
@@ -48,7 +48,7 @@
     storable-record >=0.0.1 && <0.1,
     sox >=0.2 && <0.3,
     storablevector >=0.2.3 && <0.3,
-    bytestring >= 0.9 && <0.11,
+    bytestring >= 0.9 && <0.12,
     random >=1.0 && <2.0,
     utility-ht >=0.0.5 && <0.1,
     base >= 4 && <5
