diff --git a/requirements.txt b/requirements.txt
index 9b63c4f..0d0f458 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -125,7 +125,7 @@ pipwin==0.4.6
 plac==0.9.6
 prometheus-client==0.7.1
 prompt-toolkit==3.0.5
-protobuf==3.11.3
+protobuf==3.18.3
 psutil==5.6.5
 pyasn1==0.4.8
 pyasn1-modules==0.2.8