diff --git a/pkgs/development/python-modules/growattserver/default.nix b/pkgs/development/python-modules/growattserver/default.nix
index a1ced89cd953..719ce3bd7989 100644
--- a/pkgs/development/python-modules/growattserver/default.nix
+++ b/pkgs/development/python-modules/growattserver/default.nix
@@ -6,16 +6,16 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "growattserver";
-  version = "1.7.1";
+  version = "1.8.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "indykoning";
     repo = "PyPi_GrowattServer";
-    tag = version;
-    hash = "sha256-rob2+uXuBD5Gf05rNFFEW210JxrTbWN7knk9Tnz7wOE=";
+    tag = finalAttrs.version;
+    hash = "sha256-2Jgz/wN0k6ni+4PbQwfDg3uMvYxv5N3BVgdARHqQ0Yc=";
   };
 
   build-system = [ setuptools ];
@@ -30,8 +30,8 @@ buildPythonPackage rec {
   meta = {
     description = "Python package to retrieve information from Growatt units";
     homepage = "https://github.com/indykoning/PyPi_GrowattServer";
-    changelog = "https://github.com/indykoning/PyPi_GrowattServer/releases/tag/${src.tag}";
+    changelog = "https://github.com/indykoning/PyPi_GrowattServer/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})