diff --git a/model/requirements.txt b/model/requirements.txt
index ecca225..3b3bcc6 100644
--- a/model/requirements.txt
+++ b/model/requirements.txt
@@ -34,7 +34,7 @@ packaging==20.4
 pathtools==0.1.2
 pluggy==0.13.1
 promise==2.3
-protobuf==3.12.2
+protobuf==3.18.3
 psutil==5.7.2
 py==1.9.0
 pyasn1==0.4.8