diff --git a/lib/py/src/protocol/TBinaryProtocol.py b/lib/py/src/protocol/TBinaryProtocol.py
index f92f558..43cb5a4 100644
--- a/lib/py/src/protocol/TBinaryProtocol.py
+++ b/lib/py/src/protocol/TBinaryProtocol.py
@@ -223,7 +223,7 @@
     return s
 
 
-class TBinaryProtocolFactory:
+class TBinaryProtocolFactory(object):
   def __init__(self, strictRead=False, strictWrite=True):
     self.strictRead = strictRead
     self.strictWrite = strictWrite
@@ -255,6 +255,6 @@
   pass
 
 
-class TBinaryProtocolAcceleratedFactory:
+class TBinaryProtocolAcceleratedFactory(object):
   def getProtocol(self, trans):
     return TBinaryProtocolAccelerated(trans)
diff --git a/lib/py/src/protocol/TCompactProtocol.py b/lib/py/src/protocol/TCompactProtocol.py
index b8d171e..a8b025a 100644
--- a/lib/py/src/protocol/TCompactProtocol.py
+++ b/lib/py/src/protocol/TCompactProtocol.py
@@ -79,7 +79,7 @@
     shift += 7
 
 
-class CompactType:
+class CompactType(object):
   STOP = 0x00
   TRUE = 0x01
   FALSE = 0x02
@@ -399,7 +399,7 @@
     return TTYPES[byte & 0x0f]
 
 
-class TCompactProtocolFactory:
+class TCompactProtocolFactory(object):
   def __init__(self):
     pass
 
diff --git a/lib/py/src/protocol/TJSONProtocol.py b/lib/py/src/protocol/TJSONProtocol.py
index 3539412..acfce4a 100644
--- a/lib/py/src/protocol/TJSONProtocol.py
+++ b/lib/py/src/protocol/TJSONProtocol.py
@@ -559,7 +559,7 @@
     self.writeJSONBase64(binary)
 
 
-class TJSONProtocolFactory:
+class TJSONProtocolFactory(object):
 
   def getProtocol(self, trans):
     return TJSONProtocol(trans)
diff --git a/lib/py/src/protocol/TProtocol.py b/lib/py/src/protocol/TProtocol.py
index 1d703e3..be2fcea 100644
--- a/lib/py/src/protocol/TProtocol.py
+++ b/lib/py/src/protocol/TProtocol.py
@@ -39,7 +39,7 @@
     self.type = type
 
 
-class TProtocolBase:
+class TProtocolBase(object):
   """Base class for Thrift protocol driver."""
 
   def __init__(self, trans):
@@ -445,6 +445,6 @@
                                   "i64 requires -9223372036854775808 <= number <= 9223372036854775807")
 
 
-class TProtocolFactory:
+class TProtocolFactory(object):
   def getProtocol(self, trans):
     pass