diff --git a/pkgs/development/libraries/haskell/cprng-aes/default.nix b/pkgs/development/libraries/haskell/cprng-aes/default.nix
index 1c156f47a3fa..80a04e965498 100644
--- a/pkgs/development/libraries/haskell/cprng-aes/default.nix
+++ b/pkgs/development/libraries/haskell/cprng-aes/default.nix
@@ -1,10 +1,10 @@
-{ cabal, cereal, cryptoApi, cryptocipher, random }:
+{ cabal, cereal, cryptoApi, cryptocipher, entropy, random }:
 
 cabal.mkDerivation (self: {
   pname = "cprng-aes";
-  version = "0.2.1";
-  sha256 = "0q6qkvha7cckz3zjnzfsrx298arzbdavy1f73hygrd8f7n74442j";
-  buildDepends = [ cereal cryptoApi cryptocipher random ];
+  version = "0.2.2";
+  sha256 = "0jfa9fb670bqlnkplmscz878hvdbpap47xfxvshgs102iq7rjasf";
+  buildDepends = [ cereal cryptoApi cryptocipher entropy random ];
   meta = {
     homepage = "http://github.com/vincenthz/hs-cprng-aes";
     description = "Crypto Pseudo Random Number Generator using AES in counter mode";