diff --git a/requirements.txt b/requirements.txt
index 5b11b4c..1fca2e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,5 @@ rook>=0.1.209
 flask>=1.0,<=2.0
 -e git+https://github.com/Rookout/python-flask.git@e56318f9c84978ecdaeaaff4aa819dc86f5509c7#egg=Flask_OpenTracing
 jaeger-client
-protobuf>=3.18.3 # not directly required, pinned by Snyk to avoid a vulnerability
+protobuf>=4.25.8 # not directly required, pinned by Snyk to avoid a vulnerability
 werkzeug==2.3.7