1 files changed, 1 insertions, 0 deletions
diff --git a/tox.ini b/tox.ini
index ef22368cf1..f8229eba88 100644
--- a/tox.ini
+++ b/tox.ini
@@ -179,6 +179,7 @@ extras = all
 commands = mypy \
             synapse/api \
             synapse/config/ \
+            synapse/federation/sender \
             synapse/federation/transport \
             synapse/handlers/sync.py \
             synapse/handlers/ui_auth \