diff --git a/requirements.txt b/requirements.txt
index 0c71150..6f1e185 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 google-api-python-client==1.6.4
-google-auth==1.2.1
+google-auth==1.6.3
 google-auth-httplib2==0.0.3
 click==6.7
 tox==2.9.1