diff --git a/lib/py/src/Thrift.py b/lib/py/src/Thrift.py
index 91728a7..af6f58d 100644
--- a/lib/py/src/Thrift.py
+++ b/lib/py/src/Thrift.py
@@ -77,6 +77,8 @@
   WRONG_METHOD_NAME = 3
   BAD_SEQUENCE_ID = 4
   MISSING_RESULT = 5
+  INTERNAL_ERROR = 6
+  PROTOCOL_ERROR = 7
 
   def __init__(self, type=UNKNOWN, message=None):
     TException.__init__(self, message)