diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index a85b224e5..f2acaaa18 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,2 +1,4 @@
 google-cloud-pubsub==2.7.0
 avro==1.10.2
+google-auth==2.0.0b1
+google-api-core[grpc]==2.0.0b1