diff --git a/pkgs/development/libraries/haskell/wai-websockets/default.nix b/pkgs/development/libraries/haskell/wai-websockets/default.nix
index 4b4038fd411..5558f2e32ce 100644
--- a/pkgs/development/libraries/haskell/wai-websockets/default.nix
+++ b/pkgs/development/libraries/haskell/wai-websockets/default.nix
@@ -5,8 +5,8 @@
 
 cabal.mkDerivation (self: {
   pname = "wai-websockets";
-  version = "2.1.0";
-  sha256 = "094imqhkn4ghifgp2qhs4hnby3zzdd84fhmyvvy7igcpz1rmll7a";
+  version = "2.1.0.1";
+  sha256 = "1ic1wgfp16j6lhypn1psmicafjavbhq5rvm32xqwkb65abhpg571";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [