diff --git a/pkgs/development/python-modules/s3-credentials/default.nix b/pkgs/development/python-modules/s3-credentials/default.nix
index 61af119aaaa..dd142cd09c7 100644
--- a/pkgs/development/python-modules/s3-credentials/default.nix
+++ b/pkgs/development/python-modules/s3-credentials/default.nix
@@ -13,13 +13,15 @@
 buildPythonPackage rec {
   pname = "s3-credentials";
   version = "0.10";
+  format = "setuptools";
+
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "simonw";
-    repo = "${pname}";
-    rev = "${version}";
-    sha256 = "sha256-JgqKmZG3K4JwQ1Bzw2oll/LQ1njA9wFhX0/uYr9XjAU=";
+    repo = pname;
+    rev = version;
+    hash = "sha256-JgqKmZG3K4JwQ1Bzw2oll/LQ1njA9wFhX0/uYr9XjAU=";
   };
 
   propagatedBuildInputs = [
@@ -34,6 +36,10 @@ buildPythonPackage rec {
     pytest-mock
   ];
 
+  pythonImportsCheck = [
+    "s3_credentials"
+  ];
+
   meta = with lib; {
     description = "Python CLI utility for creating credentials for accessing S3 buckets";
     homepage = "https://github.com/simonw/s3-credentials";