diff --git a/requirements.txt b/requirements.txt
index 45e3305..0622217 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ pickleshare==0.7.5
 Pillow==6.1.0
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.6.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 pygame==1.9.6
 Pygments==2.4.2