diff --git a/day1/kura/requirements.txt b/day1/kura/requirements.txt
index 7fdf141..36608aa 100644
--- a/day1/kura/requirements.txt
+++ b/day1/kura/requirements.txt
@@ -1,3 +1,3 @@
 paho-mqtt==1.4.0
-protobuf==3.7.0
+protobuf==3.18.3
 six==1.12.0