diff --git a/python_requirements.txt b/python_requirements.txt
index a668bd1..7e7f946 100644
--- a/python_requirements.txt
+++ b/python_requirements.txt
@@ -126,7 +126,7 @@ pluggy==0.8.0
 ply==3.11
 prometheus-client==0.5.0
 prompt-toolkit==2.0.7
-protobuf==3.7.1
+protobuf==3.18.3
 psutil==5.6.6
 py==1.7.0
 pycodestyle==2.4.0