diff --git a/requirements.txt b/requirements.txt
index 5e4741d..7bbf5ac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ pickleshare==0.7.5
 Pillow==5.3.0
 prometheus-client==0.4.1
 prompt-toolkit==1.0.15
-protobuf==3.6.1
+protobuf==3.18.3
 Pygments==2.2.0
 pyparsing==2.2.2
 python-dateutil==2.7.3