diff --git a/requirements.txt b/requirements.txt
index a737532..690d415 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ oauthlib==3.1.0
 opencv-python==3.4.3.18
 opt-einsum==3.1.0
 pandas==1.0.3
-protobuf==3.11.1
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.7
 pyparsing==2.4.5