diff --git a/requirements.txt b/requirements.txt
index 37caaaf..f6e679e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -105,7 +105,7 @@ pickleshare==0.7.5
 Pillow==6.2.0
 prometheus-client==0.4.2
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.18.3
 psycopg2==2.7.7
 ptyprocess==0.6.0
 pur==5.2.1