diff --git a/pkgs/development/python-modules/policy-sentry/default.nix b/pkgs/development/python-modules/policy-sentry/default.nix
index 13308ef1c985..edb30132c3cb 100644
--- a/pkgs/development/python-modules/policy-sentry/default.nix
+++ b/pkgs/development/python-modules/policy-sentry/default.nix
@@ -12,14 +12,14 @@
 
 buildPythonPackage rec {
   pname = "policy-sentry";
-  version = "0.12.3";
+  version = "0.12.4";
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "salesforce";
     repo = "policy_sentry";
-    rev = version;
-    sha256 = "sha256-LaSSjqa5BniwOIeCH/oR8vVhy2rCSo2je3rTqB4ifLg=";
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-eAydoWalAuhiZs06vU/D1JndxKBZZBsWqEFFbAvvfzA=";
   };
 
   propagatedBuildInputs = [