diff --git a/python/requirements-mqtt_sparkplug.txt b/python/requirements-mqtt_sparkplug.txt
index c094d3c..4b1276d 100644
--- a/python/requirements-mqtt_sparkplug.txt
+++ b/python/requirements-mqtt_sparkplug.txt
@@ -1,3 +1,3 @@
 paho-mqtt==1.4.0
 google==2.0.2
-protobuf==3.7.0
+protobuf==3.18.3