diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,8 @@
 # Changelog for extensible-effects-concurrent
 
+## 0.1.2.2
+	* Try to fix version bounds for hackage
+
 ## 0.1.2.1
 	* Add more documentation
 	* Simplify Dispatcher API
diff --git a/extensible-effects-concurrent.cabal b/extensible-effects-concurrent.cabal
--- a/extensible-effects-concurrent.cabal
+++ b/extensible-effects-concurrent.cabal
@@ -1,5 +1,5 @@
 name:           extensible-effects-concurrent
-version:        0.1.2.1
+version:        0.1.2.2
 description:    Please see the README on GitHub at <https://github.com/sheyll/extensible-effects-concurrent#readme>
 synopsis:       Message passing concurrency as extensible-effect
 homepage:       https://github.com/sheyll/extensible-effects-concurrent#readme
@@ -39,7 +39,7 @@
       monad-control,
       random,
       extensible-effects >= 2.4 && < 2.5,
-      stm,
+      stm >= 2.4.5,
       tagged
   exposed-modules:
       Control.Eff.ExceptionExtra,