diff --git a/requirements.txt b/requirements.txt
index fcb50e4..e53b18d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ Markdown==2.6.11
 MarkupSafe==1.0
 mkdocs==0.17.2
 pipreqs==0.4.9
-PyYAML==3.12
+PyYAML==5.4
 tornado==4.5.3
 urllib3==1.22
 yarg==0.1.9
\ No newline at end of file