diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## Version 0.2
+
+ * Support other RNGs than only `SystemRNG`
+ * Uses `SetMember` to ensure there is only one effect.
+
 ## Version 0.1
 
 Targets `crypto-random` 0.0.7 and later.
diff --git a/crypto-random-effect.cabal b/crypto-random-effect.cabal
--- a/crypto-random-effect.cabal
+++ b/crypto-random-effect.cabal
@@ -2,7 +2,7 @@
 --  documentation, see http://haskell.org/cabal/users-guide/
 
 name:                crypto-random-effect
-version:             0.2.0
+version:             0.2.0.1
 synopsis:            A random effect using crypto-random
 description:         Any help (especially documentation) is welcome
 homepage:            https://github.com/ibotty/crypto-random-effect
@@ -20,7 +20,7 @@
   exposed-modules:     Crypto.Random.Effect
   -- other-modules:       
   -- other-extensions:    
-  build-depends:       base >=4.6 && <4.7
+  build-depends:       base >=4.6 && <5
                      , bytestring <= 0.11
                      , crypto-random >=0.0.7 && <0.1
                      , extensible-effects ==1.2.*