diff --git a/rate-limit.cabal b/rate-limit.cabal
--- a/rate-limit.cabal
+++ b/rate-limit.cabal
@@ -1,5 +1,5 @@
 Name: rate-limit
-Version: 1.4.0
+Version: 1.4.1
 Build-Type: Simple
 Cabal-Version: >= 1.6
 License: BSD3
@@ -18,7 +18,7 @@
 
 Library
   Build-Depends: base       >= 4.0     && < 5.0
-               , stm        >= 2.4     && < 2.5
+               , stm        >= 2.4     && < 2.6
                , time-units >= 1.0     && < 2.0
                , time       >= 1.5.0.1 && < 1.9
   Exposed-Modules: Control.RateLimit