--- a/setup.py
+++ b/setup.py
@@ -35,10 +35,10 @@
 """
 
 requires = [
-    'boto==2.39.0',
+    'boto>=2.39.0',
     'crcmod>=1.7',
     'gcs-oauth2-boto-plugin>=1.14',
-    'google-apitools==0.5.3',
+    'google-apitools>=0.5.3',
     'httplib2>=0.8',
-    'oauth2client==2.2.0',
+    'oauth2client>=2.2.0',
     'pyOpenSSL>=0.13',
@@ -48,7 +48,6 @@
     'six>=1.9.0',
     # Not using 1.02 because of:
     #   https://code.google.com/p/socksipy-branch/issues/detail?id=3
-    'SocksiPy-branch==1.01',
+    'SocksiPy-branch>=1.01',
     # TODO: Sync submodule with tag referenced here once #339 is fixed in mock.
-    'mock==2.0.0',
 ]