diff --git a/requirements_pip.txt b/requirements_pip.txt
index c7061ac..8d1000c 100644
--- a/requirements_pip.txt
+++ b/requirements_pip.txt
@@ -72,7 +72,7 @@ pickleshare==0.7.5
 Pillow==5.2.0
 prometheus-client==0.4.2
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.18.3
 psutil==5.4.8
 ptyprocess==0.6.0
 pycodestyle==2.4.0