diff --git a/pkgs/development/python-modules/pgsanity/default.nix b/pkgs/development/python-modules/pgsanity/default.nix
index c6fa96bccf7..2e3bf29a9a9 100644
--- a/pkgs/development/python-modules/pgsanity/default.nix
+++ b/pkgs/development/python-modules/pgsanity/default.nix
@@ -17,6 +17,7 @@ buildPythonPackage rec {
     ${python.interpreter} -m unittest discover -s test
   '';
 
+  checkInputs = [ postgresql ];
   propagatedBuildInputs = [ postgresql ];
 
   meta = with stdenv.lib; {