2 files changed, 4 insertions, 3 deletions

diff --git a/setup.py b/setup.py
index 4466d57..1b88bd2 100644
--- a/setup.py
+++ b/setup.py
@@ -25,6 +25,7 @@ A plugin for GNU Mailman that adds encrypted mailing lists via PGP/MIME.""",
         'mailman>=3.1.0',
         'py-pgp',
         'atpublic',
+        'sqlalchemy',
         'zope.interface',
     ]
 )
diff --git a/tox.ini b/tox.ini
index 0a2b462..59d8123 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,11 +14,11 @@ commands =
     python -m flake8 src
 deps =
     flake8>3.0
-    flufl.testing
+    flake8-import-order
 
 [flake8]
-enable-extensions = U4
-exclude = src/mailman/compat/*.py
 hang-closing = True
 jobs = 1
 max-line-length = 79
+import-order-style = google
+application-import-names = pgpmailman