diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e8e4801e312..c358a71e2de 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -16369,12 +16369,11 @@ in modules // {
       sha256 = "1rp4xxy7qp0s0wnq3ig4ji8xsl31g901qkdp339ndxn466cqal2s";
     };
 
-    propagatedBuildInputs = with self; [
-      kazoo six
-    ];
-    buildInputs = with self; [
-
-    ];
+    propagatedBuildInputs = with self; [ kazoo six ];
+    buildInputs = with self; [ testtools ];
+    checkPhase = ''
+      ${python.interpreter} -m unittest discover zake/tests
+    '';
 
     meta = with stdenv.lib; {
       homepage = "https://github.com/yahoo/Zake";