diff --git a/alsa-seq.cabal b/alsa-seq.cabal
--- a/alsa-seq.cabal
+++ b/alsa-seq.cabal
@@ -1,5 +1,5 @@
 Name:           alsa-seq
-Version:        0.6.0.5
+Version:        0.6.0.6
 Author:
   Henning Thielemann <alsa@henning-thielemann.de>,
   Dylan Simon <dylan@dylex.net>,
@@ -31,7 +31,7 @@
   location: http://code.haskell.org/alsa/seq/
 
 Source-Repository this
-  tag:      0.6.0.5
+  tag:      0.6.0.6
   type:     darcs
   location: http://code.haskell.org/alsa/seq/
 
@@ -47,7 +47,7 @@
   Build-depends:
     alsa-core >=0.5 && <0.6,
     enumset >=0.0.3 && <0.1,
-    transformers >=0.2 && <0.5,
+    transformers >=0.2 && <0.6,
     array >=0.1 && <0.6,
     bytestring >=0.9 && <0.11,
     data-accessor >=0.2.2 && <0.3,