diff --git a/pkgs/development/python-modules/mypy-boto3-s3/default.nix b/pkgs/development/python-modules/mypy-boto3-s3/default.nix
index c0a59c084ff6..bddccabf067f 100644
--- a/pkgs/development/python-modules/mypy-boto3-s3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3-s3/default.nix
@@ -9,12 +9,13 @@
 buildPythonPackage rec {
   pname = "mypy-boto3-s3";
   version = "1.21.0";
+  format = "setuptools";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-3P3dThYXpmtZ/cn+NCDS9RNtu6N48Vb78ZqmCdkTK50=";
+    hash = "sha256-3P3dThYXpmtZ/cn+NCDS9RNtu6N48Vb78ZqmCdkTK50=";
   };
 
   propagatedBuildInputs = [