diff --git a/pkgs/development/libraries/haskell/websockets/default.nix b/pkgs/development/libraries/haskell/websockets/default.nix
index 82a745b8725..24b0554ea01 100644
--- a/pkgs/development/libraries/haskell/websockets/default.nix
+++ b/pkgs/development/libraries/haskell/websockets/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "websockets";
-  version = "0.8.1.2";
-  sha256 = "1xr44j3fcah3p5ic5s4rirb1ribq88m7ckmdfhwz5wy42sfiwv99";
+  version = "0.8.1.3";
+  sha256 = "16iq2grgafshjwhjxwb0qdxiawr6z6hxaksix52nr8l4wm9ibhjv";
   buildDepends = [
     attoparsec base64Bytestring binary blazeBuilder caseInsensitive
     entropy ioStreams mtl network random SHA text