diff --git a/webhook/requirements-dev.txt b/webhook/requirements-dev.txt
index 40c7047..c1cfdf2 100644
--- a/webhook/requirements-dev.txt
+++ b/webhook/requirements-dev.txt
@@ -34,7 +34,7 @@ mccabe==0.6.1
 more-itertools==8.4.0
 packaging==20.4
 pluggy==0.13.1
-protobuf==3.12.2
+protobuf==3.18.3
 py==1.9.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8