diff --git a/requirements.txt b/requirements.txt
index b6b164b..f177f1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ oauthlib==3.1.0
 opencv-contrib-python==4.2.0.32
 pandas==0.24.2
 Pillow==7.1.2
-protobuf==3.14.0
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==2.4.7