diff --git a/requirements.txt b/requirements.txt
index 73b0b22..c39c323 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,9 @@ google-api-core==1.14.0
 google-auth==1.6.3
 google-cloud-core==1.0.2
 google-cloud-firestore==1.3.0
+google-cloud-pubsub==0.45.0
 googleapis-common-protos==1.6.0
+grpc-google-iam-v1==0.12.3
 grpcio==1.22.0
 idna==2.8
 itsdangerous==1.1.0