diff --git a/pkgs/development/python-modules/starlette/default.nix b/pkgs/development/python-modules/starlette/default.nix
index 05c3cd829f9b..d1e8f789fc38 100644
--- a/pkgs/development/python-modules/starlette/default.nix
+++ b/pkgs/development/python-modules/starlette/default.nix
@@ -21,7 +21,7 @@
 
 buildPythonPackage rec {
   pname = "starlette";
-  version = "0.20.1";
+  version = "0.20.4";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
@@ -29,8 +29,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "encode";
     repo = pname;
-    rev = version;
-    hash = "sha256-PUZ9joOhXkL1K2yi0baiuY74PIi71V/epX8zdcUv1DA=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-vP2TJPn9lRGnLGkO8lUmnsoT6rSnhuWDD3WqNk76SM0=";
   };
 
   postPatch = ''