diff --git a/requirements.txt b/requirements.txt
index abdedbd..21116b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -103,7 +103,7 @@ pickleshare==0.7.4
 Pillow==4.0.0
 ply==3.8
 prompt-toolkit==1.0.7
-protobuf==3.1.0
+protobuf==3.18.3
 psutil==4.1.0
 ptyprocess==0.5.1
 py==1.4.31