diff --git a/pkgs/development/python-modules/pymitsubishi/default.nix b/pkgs/development/python-modules/pymitsubishi/default.nix
index ef6db94b7d90..66af76967451 100644
--- a/pkgs/development/python-modules/pymitsubishi/default.nix
+++ b/pkgs/development/python-modules/pymitsubishi/default.nix
@@ -9,21 +9,21 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "pymitsubishi";
-  version = "0.5.1";
+  version = "0.5.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pymitsubishi";
     repo = "pymitsubishi";
-    tag = "v${version}";
-    hash = "sha256-aF/EV09b+UYDL7PMK2cFTpq7DsY+xmjWycSs8jKt8GQ=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-e2BbeJQH1SSge/SoU5ylF1/wHz2BBcBRqlpvX8WFJhs=";
   };
 
   postPatch = ''
     # make sure pyproject.toml specifies the correct version
-    grep -qF 'version = "${version}"' pyproject.toml
+    grep -qF 'version = "${finalAttrs.version}"' pyproject.toml
   '';
 
   build-system = [ setuptools ];
@@ -43,8 +43,8 @@ buildPythonPackage rec {
   meta = {
     description = "Library for controlling and monitoring Mitsubishi MAC-577IF-2E air conditioners";
     homepage = "https://github.com/pymitsubishi/pymitsubishi";
-    changelog = "https://github.com/pymitsubishi/pymitsubishi/releases/tag/${src.tag}";
+    changelog = "https://github.com/pymitsubishi/pymitsubishi/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ uvnikita ];
   };
-}
+})