diff --git a/mysite/requirements.txt b/mysite/requirements.txt
index c360310..8b1421e 100644
--- a/mysite/requirements.txt
+++ b/mysite/requirements.txt
@@ -18,7 +18,7 @@ idna==2.8
 kombu==4.6.3
 mccabe==0.6.1
 Pillow==6.1.0
-protobuf==3.9.0
+protobuf==3.15.0
 psycopg2==2.8.3
 pycodestyle==2.5.0
 pydevd==1.6.1