diff --git a/pkgs/development/python-modules/timezonefinder/default.nix b/pkgs/development/python-modules/timezonefinder/default.nix
index 1681659714be3..bc550d7aef73c 100644
--- a/pkgs/development/python-modules/timezonefinder/default.nix
+++ b/pkgs/development/python-modules/timezonefinder/default.nix
@@ -13,16 +13,16 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "timezonefinder";
-  version = "8.2.0";
+  version = "8.2.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "jannikmi";
     repo = "timezonefinder";
-    tag = version;
-    hash = "sha256-VIC+cLRDSaXLEz1Vpu6opoU5D0Q1xWaVq4OqzRBTiDw=";
+    tag = finalAttrs.version;
+    hash = "sha256-OuNJ4C5/rQo8o7o8R39FvwqK7lS7IGGDjNaP2n3GTVU=";
   };
 
   build-system = [ setuptools ];
@@ -45,7 +45,7 @@ buildPythonPackage rec {
     pydantic
     pytestCheckHook
   ]
-  ++ lib.concatAttrValues optional-dependencies;
+  ++ lib.concatAttrValues finalAttrs.passthru.optional-dependencies;
 
   pythonImportsCheck = [ "timezonefinder" ];
 
@@ -67,9 +67,9 @@ buildPythonPackage rec {
   meta = {
     description = "Module for finding the timezone of any point on earth (coordinates) offline";
     homepage = "https://github.com/MrMinimal64/timezonefinder";
-    changelog = "https://github.com/jannikmi/timezonefinder/blob/${src.tag}/CHANGELOG.rst";
+    changelog = "https://github.com/jannikmi/timezonefinder/blob/${finalAttrs.src.tag}/CHANGELOG.rst";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ fab ];
     mainProgram = "timezonefinder";
   };
-}
+})