diff --git a/ryu/lib/ovs/db_client.py b/ryu/lib/ovs/db_client.py
index 09a7948b..5b414d18 100644
--- a/ryu/lib/ovs/db_client.py
+++ b/ryu/lib/ovs/db_client.py
@@ -17,6 +17,9 @@
 import logging
 import os
 
+import ryu.contrib
+ryu.contrib.update_module_path()
+
 from ovs import (jsonrpc,
                  stream)
 from ovs import util as ovs_util
diff --git a/ryu/lib/ovs/vsctl.py b/ryu/lib/ovs/vsctl.py
index 9d8d8486..a2e3c422 100644
--- a/ryu/lib/ovs/vsctl.py
+++ b/ryu/lib/ovs/vsctl.py
@@ -22,6 +22,9 @@ import os
 import sys
 import weakref
 
+import ryu.contrib
+ryu.contrib.update_module_path()
+
 import ovs.db.data
 import ovs.db.types
 import ovs.poller