diff --git a/requirements.txt b/requirements.txt
index 2b0fc38..772c635 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,7 +48,7 @@ oauthlib==3.1.0
 opencv-python==4.2.0.32
 Pillow==7.1.0
 priority==1.3.0
-protobuf==3.11.3
+protobuf==3.15.0
 psycopg2==2.8.4
 pyasn1==0.4.8
 pyasn1-modules==0.2.8