diff --git a/ryu/tests/packet_data_generator/rebar.config b/ryu/tests/packet_data_generator/rebar.config
index 63876663..fc346f05 100644
--- a/ryu/tests/packet_data_generator/rebar.config
+++ b/ryu/tests/packet_data_generator/rebar.config
@@ -23,8 +23,9 @@
 %   https://github.com/FlowForwarding/of_protocol/pull/52
 %   https://github.com/FlowForwarding/of_protocol/pull/56
 %   https://github.com/FlowForwarding/of_protocol/pull/57
+%   EXT-256
    {git, "http://github.com/yamt/of_protocol.git",
-    "dabf39ae405eac2f98735545407f362f50dd23f9"}},
+    "048096795e739d923c08498dcf5e917bd603527d"}},
   {flower, ".*",
    {git, "http://github.com/travelping/flower.git",
     "d783d8f722cb1eb2fa598d4521b309cfcc703fdb"}}]}.