diff --git a/mirror/dependencies/pnda_requirements_py2.txt b/mirror/dependencies/pnda_requirements_py2.txt
index 19c18c5c..949de970 100644
--- a/mirror/dependencies/pnda_requirements_py2.txt
+++ b/mirror/dependencies/pnda_requirements_py2.txt
@@ -3,7 +3,7 @@ Flask==0.12
 Jinja2==2.8
 MarkupSafe==0.23
 PyHDFS==0.1.2
-PyYAML==3.12
+PyYAML==5.4
 Tornado-JSON==1.3.1
 Werkzeug==0.11.13
 appdirs==1.4.3