diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index 7910d657..8acd9c54 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,4 +1,4 @@
 google-api-python-client==1.6.4
-google-auth==1.1.1
+google-auth==1.2.0
 google-auth-httplib2==0.0.2
-google-cloud==0.27.0
+google-cloud==0.28.0