diff --git a/synthesizer-alsa.cabal b/synthesizer-alsa.cabal
--- a/synthesizer-alsa.cabal
+++ b/synthesizer-alsa.cabal
@@ -1,5 +1,5 @@
 Name:           synthesizer-alsa
-Version:        0.5.0.2
+Version:        0.5.0.3
 License:        GPL
 License-File:   LICENSE
 Author:         Henning Thielemann <haskell@henning-thielemann.de>
@@ -19,7 +19,7 @@
 Build-Type:     Simple
 
 Source-Repository this
-  Tag:         0.5.0.2
+  Tag:         0.5.0.3
   Type:        darcs
   Location:    http://code.haskell.org/synthesizer/alsa/
 
@@ -42,7 +42,7 @@
   Build-Depends:
     synthesizer-midi >=0.6 && <0.7,
     synthesizer-dimensional >=0.7 && <0.8,
-    synthesizer-core >=0.6 && <0.8,
+    synthesizer-core >=0.6 && <0.9,
     midi-alsa >=0.2 && <0.3,
     midi >=0.2 && <0.3,
     sox >=0.2.1 && <0.3,
@@ -53,12 +53,12 @@
     numeric-prelude >=0.3 && <0.5,
     non-negative >=0.1 && <0.2,
     event-list >=0.1 && <0.2,
-    transformers >=0.2 && <0.5,
+    transformers >=0.2 && <0.6,
     utility-ht >=0.0.1 && <0.1
 
   If flag(splitBase)
     Build-Depends:
-      random >= 1.0 && < 1.1,
+      random >= 1.0 && < 1.2,
       old-time >= 1.0 && < 1.2,
       base >= 3 && <5
   Else