diff --git a/requirements.txt b/requirements.txt
index 3bf76c5..25a52b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -95,7 +95,7 @@ platformdirs==2.3.0
 pluggy==0.13.1
 poetry==1.1.6
 poetry-core==1.0.4
-protobuf==3.17.3
+protobuf==3.18.3
 ptyprocess==0.7.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8