diff --git a/requirements.txt b/requirements.txt
index 7dc7553..aa87701 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ Pillow==6.0.0
 ply==3.10
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
-protobuf==3.7.1
+protobuf==3.18.3
 psutil==5.6.1
 PuLP==1.6.9
 pydot==1.4.1