diff --git a/requirements.txt b/requirements.txt
index c304d42..37d66d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ Markdown==3.1.1
 MarkupSafe==1.1.1
 numpy==1.17.4
 protobuf==3.11.1
-PyYAML==5.2
+PyYAML==5.4
 scipy==1.3.3
 six==1.13.0
 tensorboard==1.14.0