diff --git a/pkgs/development/python-modules/pendulum/default.nix b/pkgs/development/python-modules/pendulum/default.nix
index b74866ffd026..283e2264e942 100644
--- a/pkgs/development/python-modules/pendulum/default.nix
+++ b/pkgs/development/python-modules/pendulum/default.nix
@@ -27,42 +27,24 @@
 
 buildPythonPackage rec {
   pname = "pendulum";
-  version = "3.0.0";
+  version = "3.1.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "sdispater";
     repo = "pendulum";
     tag = version;
-    hash = "sha256-v0kp8dklvDeC7zdTDOpIbpuj13aGub+oCaYz2ytkEpI=";
+    hash = "sha256-ZjQaN5vT1+3UxwLNNsUmU4gSs6reUl90VSEumS0sEGY=";
   };
 
-  postPatch = ''
-    substituteInPlace rust/Cargo.lock \
-      --replace "3.0.0-beta-1" "3.0.0"
-  '';
-
   cargoRoot = "rust";
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit src;
     sourceRoot = "${src.name}/rust";
     name = "${pname}-${version}";
-    hash = "sha256-6WgGIfz9I+xRJqXWhjfGDZM1umYwVlUEpLAiecZNZmI=";
-    postPatch = ''
-      substituteInPlace Cargo.lock \
-        --replace "3.0.0-beta-1" "3.0.0"
-    '';
+    hash = "sha256-F5bCuvI8DcyeUTS7UyYBixCjuGFKGOXPw8HLVlYKuxA=";
   };
 
-  patches = [
-    # fix build on 32bit
-    # https://github.com/sdispater/pendulum/pull/842
-    (fetchpatch {
-      url = "https://github.com/sdispater/pendulum/commit/6f2fcb8b025146ae768a5889be4a437fbd3156d6.patch";
-      hash = "sha256-47591JvpADxGQT2q7EYWHfStaiWyP7dt8DPTq0tiRvk=";
-    })
-  ];
-
   nativeBuildInputs = [
     poetry-core
     rustPlatform.maturinBuildHook