diff --git a/service/requirements.txt b/service/requirements.txt
index 2da8e1e..b1be0d2 100644
--- a/service/requirements.txt
+++ b/service/requirements.txt
@@ -1,4 +1,4 @@
 xmltodict==0.12.0
 requests==2.27.1
 Flask==2.1.1
-PyYAML==5.1
\ No newline at end of file
+PyYAML==5.4
\ No newline at end of file