diff --git a/pkgs/development/libraries/haskell/unordered-containers/default.nix b/pkgs/development/libraries/haskell/unordered-containers/default.nix
index 4c3fbbc2e52..df0be2ea477 100644
--- a/pkgs/development/libraries/haskell/unordered-containers/default.nix
+++ b/pkgs/development/libraries/haskell/unordered-containers/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "unordered-containers";
-  version = "0.2.3.0";
-  sha256 = "1vzgjr9jxdkmgq970ng9zi2j60awvx8iv1v6kzjlrkwzxx1a9dpd";
+  version = "0.2.3.1";
+  sha256 = "10wz5y42r9b2ym7vl5sqrcawyjixmhy370h0kzpvczs8mlzvrlx8";
   buildDepends = [ deepseq hashable ];
   testDepends = [
     ChasingBottoms hashable HUnit QuickCheck testFramework