diff --git a/worker/requirements.txt b/worker/requirements.txt
index 0f21a14..09f8b49 100644
--- a/worker/requirements.txt
+++ b/worker/requirements.txt
@@ -9,7 +9,7 @@ google-resumable-media==0.5.1
 googleapis-common-protos==1.52.0
 grpcio==1.29.0
 idna==2.9
-protobuf==3.12.2
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pytz==2020.1