diff --git a/KafkaUdn/requirements.txt b/KafkaUdn/requirements.txt
index e4cc17e..dc39c9a 100644
--- a/KafkaUdn/requirements.txt
+++ b/KafkaUdn/requirements.txt
@@ -13,7 +13,7 @@ idna==2.7
 itsdangerous==0.24
 Jinja2==2.10
 MarkupSafe==1.0
-PyYAML==3.11
+PyYAML==5.4
 requests==2.19.1
 six==1.9.0
 urllib3==1.23