diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f84a1e50c36..a1bb7d7469c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -19113,6 +19113,12 @@ in modules // {
       sha256 = "43c2c9e5e7a16b6c88ba3088a9bfc82f7db8e13378be7c78d6c14a5f8ed05afd";
     };
 
+    buildInputs = with self; [ nose ];
+
+    checkPhase = ''
+      nosetests toolz/tests
+    '';
+
     meta = {
       homepage = "http://github.com/pytoolz/toolz/";
       description = "List processing tools and functional utilities";