diff --git a/pkgs/development/tools/documentation/haddock/2.9.3.nix b/pkgs/development/tools/documentation/haddock/2.9.4.nix
similarity index 86%
rename from pkgs/development/tools/documentation/haddock/2.9.3.nix
rename to pkgs/development/tools/documentation/haddock/2.9.4.nix
index 1d12654b33ff..a06311176504 100644
--- a/pkgs/development/tools/documentation/haddock/2.9.3.nix
+++ b/pkgs/development/tools/documentation/haddock/2.9.4.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "haddock";
-  version = "2.9.3";
-  sha256 = "0r3yp5s7qv9hmwwfz8rxbwj39qpysgyg53ka4alaxnfma0a96iyj";
+  version = "2.9.4";
+  sha256 = "18w5pa1zpjy9mmdzjh0hs8jybmky8j87vzry54nni6a3517c5x86";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ ghcPaths xhtml ];
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index a2c2e88830a2..738205ea23cc 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1378,7 +1378,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
   haddock_2_4_2 = callPackage ../development/tools/documentation/haddock/2.4.2.nix {};
   haddock_2_7_2 = callPackage ../development/tools/documentation/haddock/2.7.2.nix {};
   haddock_2_9_2 = callPackage ../development/tools/documentation/haddock/2.9.2.nix {};
-  haddock_2_9_3 = callPackage ../development/tools/documentation/haddock/2.9.3.nix {};
+  haddock_2_9_4 = callPackage ../development/tools/documentation/haddock/2.9.4.nix {};
   haddock = self.haddock_2_7_2;
 
   happy_1_18_4 = callPackage ../development/tools/parsing/happy/1.18.4.nix {};