diff --git a/pkgs/development/libraries/haskell/mwc-random/default.nix b/pkgs/development/libraries/haskell/mwc-random/default.nix
index d64c74c68a87..5e015ecbe967 100644
--- a/pkgs/development/libraries/haskell/mwc-random/default.nix
+++ b/pkgs/development/libraries/haskell/mwc-random/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "mwc-random";
-  version = "0.13.2.0";
-  sha256 = "07nbbn9ainzsqg2hlw6l9vsfqylfcqs1apgvpnhdgids2gvmrkaa";
+  version = "0.13.2.2";
+  sha256 = "1rsrvadaih66xn8zr8kfvrr65g7wpj6i9jnzkmlik9lqrvz4axcp";
   buildDepends = [ primitive time vector ];
   testDepends = [
     HUnit QuickCheck statistics testFramework testFrameworkHunit