diff --git a/pkgs/development/python-modules/gattlib/default.nix b/pkgs/development/python-modules/gattlib/default.nix
index e9bf36c3d599..3073ee291ddc 100644
--- a/pkgs/development/python-modules/gattlib/default.nix
+++ b/pkgs/development/python-modules/gattlib/default.nix
@@ -16,13 +16,13 @@
 
 buildPythonPackage rec {
   pname = "gattlib";
-  version = "20210616";
+  version = "0.20210616";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "oscaracena";
     repo = "pygattlib";
-    rev = "v.${version}";
+    tag = "v.${lib.removePrefix "0." version}";
     hash = "sha256-n3D9CWKvgw4FYmbvsfhaHN963HARBG0p4CcZBC8Gkb0=";
   };