diff --git a/pymongo/__init__.py b/pymongo/__init__.py
index 3d107bf07..1ccc00019 100644
--- a/pymongo/__init__.py
+++ b/pymongo/__init__.py
@@ -91,7 +91,7 @@ class ReadPreference:
     SECONDARY = 1
     SECONDARY_ONLY = 2
 
-version_tuple = (2, 2)
+version_tuple = (2, 2, '+')
 
 def get_version_string():
     if isinstance(version_tuple[-1], basestring):
diff --git a/setup.py b/setup.py
index e4134b30f..cb01b5874 100755
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@ from distutils.errors import CCompilerError
 from distutils.errors import DistutilsPlatformError, DistutilsExecError
 from distutils.core import Extension
 
-version = "2.2"
+version = "2.2+"
 
 f = open("README.rst")
 try: