diff --git a/docs/requirements.txt b/docs/requirements.txt
index 5b83c43..67c6847 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -11,7 +11,7 @@ MarkupSafe==1.1.0
 mccabe==0.6.1
 mkdocs==1.0.4
 pylint==2.1.1
-PyYAML==3.13
+PyYAML==5.4
 six==1.11.0
 tornado==5.1.1
 wrapt==1.10.11
\ No newline at end of file