diff --git a/resource-pool.cabal b/resource-pool.cabal
--- a/resource-pool.cabal
+++ b/resource-pool.cabal
@@ -1,5 +1,5 @@
 name:                resource-pool
-version:             0.2.3.0
+version:             0.2.3.1
 synopsis:            A high-performance striped resource pooling implementation
 description:
   A high-performance striped pooling abstraction for managing
@@ -35,7 +35,7 @@
     monad-control >= 0.2.0.1,
     transformers,
     transformers-base >= 0.4,
-    stm,
+    stm >= 2.3,
     time,
     vector >= 0.7