diff --git a/pkgs/by-name/ta/taskflow/package.nix b/pkgs/by-name/ta/taskflow/package.nix
index cfe18e3c20a6..14e3cb8176e2 100644
--- a/pkgs/by-name/ta/taskflow/package.nix
+++ b/pkgs/by-name/ta/taskflow/package.nix
@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "taskflow";
-  version = "3.11.0";
+  version = "4.0.0";
 
   src = fetchFromGitHub {
     owner = "taskflow";
     repo = "taskflow";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-GIP/69JlygdmryRA4uiyXM3FZZ0wkvP3DceYGkn4+QY=";
+    hash = "sha256-cWnKA6tCsKRfkleBJ38NRP2ciJu4sHtyTS8y5bBTfcA=";
   };
 
   patches = [
diff --git a/pkgs/development/python-modules/rapidfuzz/default.nix b/pkgs/development/python-modules/rapidfuzz/default.nix
index ade8f0740fa1..fc42fdb4fa21 100644
--- a/pkgs/development/python-modules/rapidfuzz/default.nix
+++ b/pkgs/development/python-modules/rapidfuzz/default.nix
@@ -35,6 +35,12 @@ buildPythonPackage rec {
       url = "https://github.com/rapidfuzz/RapidFuzz/commit/0ef2a4980c41b852283e6db7a747a1632307c75e.patch";
       hash = "sha256-xb+J3PXwD51lZqIJcTzPJWrT/oqrIXxh1cLp91DhIPg=";
     })
+    # https://github.com/rapidfuzz/RapidFuzz/pull/470
+    (fetchpatch {
+      name = "support-taskflow-4.0.0.patch";
+      url = "https://github.com/rapidfuzz/RapidFuzz/commit/4b794e6168d98fff4c518a64c4d809238b17d8fe.patch";
+      hash = "sha256-F4gwV4ewcHfR7ptcEVAvbiNFIvXqFCIM/Qk8giv4jAc=";
+    })
   ];
 
   postPatch = ''