diff --git a/pkgs/development/libraries/haskell/unordered-containers/default.nix b/pkgs/development/libraries/haskell/unordered-containers/default.nix
index b007d137d60..096fb1932ac 100644
--- a/pkgs/development/libraries/haskell/unordered-containers/default.nix
+++ b/pkgs/development/libraries/haskell/unordered-containers/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "unordered-containers";
-  version = "0.1.4.2";
-  sha256 = "0nfw82zng9y5dinjn78k05i4c4bjc1y6yb2dwqwczb85hbrqiha6";
+  version = "0.1.4.3";
+  sha256 = "0zya72777bnmiw77rqn8k2a0g7g3j0fzpk409qb827qs3j1ffikg";
   buildDepends = [ deepseq hashable ];
   meta = {
     description = "Efficient hashing-based container types";