diff --git a/requirements.txt b/requirements.txt
index 4b03727..8447981 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ Markdown==3.2.1
 MarkupSafe==1.0
 numpy==1.18.3
 Pillow==5.1.0
-PyYAML==5.3.1
+PyYAML==5.4
 tensorboard==2.1.1
 tensorflow-estimator==2.1.0
 tensorflow-gpu==2.1.0