diff --git a/monad-st.cabal b/monad-st.cabal
--- a/monad-st.cabal
+++ b/monad-st.cabal
@@ -1,6 +1,6 @@
 name:          monad-st
 category:      Control, Monads
-version:       0.2.4
+version:       0.2.4.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -27,7 +27,7 @@
 
   build-depends:
     base         >= 4   && < 5,
-    transformers >= 0.2 && < 0.5
+    transformers >= 0.2 && < 0.6
 
   exposed-modules:
     Control.Monad.ST.Class