diff --git a/example/mqtt2sesame/requirements.txt b/example/mqtt2sesame/requirements.txt
index dc09727..1cc322e 100644
--- a/example/mqtt2sesame/requirements.txt
+++ b/example/mqtt2sesame/requirements.txt
@@ -1,3 +1,3 @@
 paho-mqtt==1.6.1
 pysesameos2
-PyYAML==6.0
+PyYAML==6.0.3