diff --git a/sleekxmpp/plugins/__init__.py b/sleekxmpp/plugins/__init__.py
index 951f31eb..2c90d357 100644
--- a/sleekxmpp/plugins/__init__.py
+++ b/sleekxmpp/plugins/__init__.py
@@ -83,4 +83,5 @@ __all__ = [
     'xep_0319',  # Last User Interaction in Presence
     'xep_0323',  # IoT Systems Sensor Data
     'xep_0325',  # IoT Systems Control
+    'xep_0332',  # HTTP Over XMPP Transport
 ]