diff --git a/optional-requirements.txt b/optional-requirements.txt
index 0d670875..a2b05408 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -1,7 +1,7 @@
 # GDrive Integration
 google-api-python-client==1.7.11,<1.8.0
 gevent>=1.2.1,<20.6.0
-greenlet>=0.4.12,<0.5.0
+greenlet>=0.4.12,<0.4.17
 httplib2>=0.9.2,<0.18.0
 oauth2client>=4.0.0,<4.1.4
 uritemplate>=3.0.0,<3.1.0