diff --git a/requirements.txt b/requirements.txt
index 7370aa2c3a7..72d0457644f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,9 +8,11 @@ decorator>=3.4.0 # BSD
 enum34;python_version=='2.7' or python_version=='2.6' or python_version=='3.3' # BSD
 eventlet!=0.18.3,>=0.18.2 # MIT
 greenlet>=0.3.2 # MIT
+httplib2>=0.7.5  # MIT
 iso8601>=0.1.9 # MIT
 keystonemiddleware!=4.1.0,>=4.0.0 # Apache-2.0
 lxml>=2.3 # BSD
+oauth2client>=1.5.0  # Apache-2.0
 oslo.config>=3.7.0 # Apache-2.0
 oslo.concurrency>=3.5.0 # Apache-2.0
 oslo.context>=0.2.0 # Apache-2.0