diff --git a/requirements.txt b/requirements.txt
index d15dd2f..d8a3b6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ joblib==0.17.0
 numpy==1.22.0
 packaging==20.4
 Pillow==9.0.1
-protobuf==3.15.0
+protobuf==3.18.3
 pydantic==1.7.4
 pyparsing==2.4.7
 regex==2020.11.13