diff --git a/pusher-http-haskell.cabal b/pusher-http-haskell.cabal
--- a/pusher-http-haskell.cabal
+++ b/pusher-http-haskell.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.18
 name:          pusher-http-haskell
-version:       2.1.0.22
+version:       2.1.0.23
 license:       MIT
 license-file:  LICENSE
 copyright:     (c) Will Sewell, 2016
@@ -48,7 +48,7 @@
         http-client >=0.4.30 && <0.8,
         http-client-tls >=0.3 && <0.5,
         http-types >=0.8 && <0.13,
-        ram ==0.21.*,
+        ram >=0.21 && <0.23,
         text >=1.2 && < 2.2,
         time >=1.5 && <1.16,
         unordered-containers ==0.2.*