diff --git a/optional-requirements.txt b/optional-requirements.txt
index 91eb6192..605667d2 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -1,14 +1,14 @@
 # GDrive Integration
 google-api-python-client==1.7.11
-gevent==1.2.1
-greenlet==0.4.12
-httplib2==0.9.2
-oauth2client==4.0.0
-uritemplate==3.0.0
-pyasn1-modules==0.0.8
-pyasn1==0.1.9
-PyDrive==1.3.1
-PyYAML==3.12
+gevent>=1.2.1
+greenlet>=0.4.12
+httplib2>=0.9.2
+oauth2client>=4.0.0
+uritemplate>=3.0.0
+pyasn1-modules>=0.0.8
+pyasn1>=0.1.9
+PyDrive>=1.3.1
+PyYAML>=3.12
 rsa==3.4.2
 six==1.10.0