diff --git a/requirements.txt b/requirements.txt
index d1f6d2d..e00452b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ pickleshare==0.7.5
 progress==1.5
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
-protobuf==3.6.1
+protobuf==3.18.3
 Pygments==2.3.1
 pyparsing==2.3.0
 pyrsistent==0.14.11