diff --git a/csound-catalog.cabal b/csound-catalog.cabal
--- a/csound-catalog.cabal
+++ b/csound-catalog.cabal
@@ -1,5 +1,5 @@
 Name:          csound-catalog
-Version:       0.1
+Version:       0.1.1
 Cabal-Version: >= 1.6
 License:       BSD3
 License-file:  LICENSE
@@ -27,7 +27,7 @@
 Library
   Ghc-Options:    -Wall
   Build-Depends:
-        base >= 4, base < 5, transformers, csound-expression >= 3.0.0
+        base >= 4, base < 5, transformers >= 0.3, csound-expression >= 3.0.0
   Hs-Source-Dirs:      src/
   Exposed-Modules:
         Csound.Catalog