diff --git a/pkgs/development/python-modules/google-cloud-access-context-manager/default.nix b/pkgs/development/python-modules/google-cloud-access-context-manager/default.nix
index c9690b6e3104..05963856edce 100644
--- a/pkgs/development/python-modules/google-cloud-access-context-manager/default.nix
+++ b/pkgs/development/python-modules/google-cloud-access-context-manager/default.nix
@@ -1,20 +1,25 @@
-{ lib, buildPythonPackage, fetchPypi, google-api-core }:
+{ lib
+, buildPythonPackage
+, fetchPypi
+, google-api-core
+, pythonOlder
+}:
 
 buildPythonPackage rec {
   pname = "google-cloud-access-context-manager";
   version = "0.1.9";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
     sha256 = "249a1c1a858bb182b73749784457baacfcab8e7c13da5f3421109d5b8dace5b8";
   };
 
-  postPatch = ''
-    substituteInPlace setup.py \
-      --replace "google-api-core[grpc] >= 1.26.0, < 2.0.0dev" "google-api-core[grpc] >= 1.26.0, < 2.0.1"
-  '';
-
-  propagatedBuildInputs = [ google-api-core ];
+  propagatedBuildInputs = [
+    google-api-core
+  ];
 
   # No tests in repo
   doCheck = false;