diff --git a/pkgs/development/python-modules/pymonctl/default.nix b/pkgs/development/python-modules/pymonctl/default.nix
index ec4ee4fb1073..643e56257c1e 100644
--- a/pkgs/development/python-modules/pymonctl/default.nix
+++ b/pkgs/development/python-modules/pymonctl/default.nix
@@ -10,7 +10,7 @@
   typing-extensions,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "pymonctl";
   version = "0.92";
   pyproject = true;
@@ -18,7 +18,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "Kalmat";
     repo = "PyMonCtl";
-    rev = "refs/tags/v${version}";
+    tag = "refs/tags/v${finalAttrs.version}";
     hash = "sha256-eFB+HqYBud836VNEA8q8o1KQKA+GHwSC0YfU1KCbDXw=";
   };
 
@@ -41,4 +41,4 @@ buildPythonPackage rec {
     maintainers = with lib.maintainers; [ sigmanificient ];
     broken = stdenv.hostPlatform.isDarwin;
   };
-}
+})