diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -7,5 +7,7 @@ setenv =
     PYTHONHASHSEED = 0
 deps =
     pytest: pytest
+    python-ldap
+    python-pam
 commands =
     pytest: py.test {posargs}