diff --git a/requirements.txt b/requirements.txt
index ca212e0..9d1edf4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ parso==0.3.1
 pickleshare==0.7.4
 Pillow==5.2.0
 prompt-toolkit==1.0.15
-protobuf==3.5.2
+protobuf==3.18.3
 Pygments==2.2.0
 pyparsing==2.2.0
 python-dateutil==2.7.3