diff --git a/jukebox.cabal b/jukebox.cabal
--- a/jukebox.cabal
+++ b/jukebox.cabal
@@ -1,5 +1,5 @@
 Name: jukebox
-Version: 0.2.5
+Version: 0.2.6
 Cabal-version: >= 1.8
 Build-type: Simple
 Author: Nick Smallbone
@@ -24,8 +24,8 @@
   location: https://github.com/nick8325/jukebox
 
 Library
-  Build-depends: base >= 4 && < 5, array, transformers, directory,
-    filepath, pretty, minisat, symbol, dlist, process, containers, uglymemo
+  Build-depends: base >= 4 && < 5, array, transformers >= 0.4.0.0, directory,
+    filepath, pretty >= 1.1.2.0, minisat, symbol, dlist, process, containers, uglymemo
   ghc-options: -W -fno-warn-incomplete-patterns
   Build-tools: alex
   Hs-source-dirs: src