diff --git a/pkgs/development/python-modules/getmac/default.nix b/pkgs/development/python-modules/getmac/default.nix
index 96f540088dc6..ecc9760ae36e 100644
--- a/pkgs/development/python-modules/getmac/default.nix
+++ b/pkgs/development/python-modules/getmac/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "getmac";
-  version = "0.8.3";
+  version = "0.9.1";
   format = "setuptools";
 
   src = fetchFromGitHub {
     owner = "GhostofGoes";
     repo = pname;
-    rev = version;
-    sha256 = "sha256-X4uuYisyobCxhoywaSXBZjVxrPAbBiZrWUJAi2/P5mw=";
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-U04mtg7DCC78X5Fd0wGaHrf8XkUpDLi4+ctKCyR4dKg=";
   };
 
   nativeCheckInputs = [