diff --git a/requirements.txt b/requirements.txt
index 48588ee..4fd7b7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pickleshare==0.7.5
 Pillow==6.1.0
 pluggy==0.12.0
 prompt-toolkit==2.0.9
-protobuf==3.9.1
+protobuf==3.18.3
 psutil==5.6.3
 ptyprocess==0.6.0
 py==1.8.0