diff --git a/hruby.cabal b/hruby.cabal
--- a/hruby.cabal
+++ b/hruby.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >= 1.10
 name:                hruby
-version:             0.3.5.4
+version:             0.3.6
 synopsis:            Embed a Ruby intepreter in your Haskell program !
 description:         This doesn't work with Ruby 1.9. Everything you need should be in Foreign.Ruby.Safe.
 license:             BSD3
@@ -31,7 +31,7 @@
                         , attoparsec           >= 0.11 && < 0.14
                         , vector               >= 0.10
                         , unordered-containers >= 0.2 && < 0.3
-                        , stm                  >= 2.4 && < 2.5
+                        , stm                  >= 2.4 && < 2.6
                         , scientific           >= 0.2 && < 0.4
   c-sources:            cbits/shim.c
   install-includes:     cbits/shim.h