diff --git a/requirements.txt b/requirements.txt
index f95677c..fd38c88 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ Markdown==3.0.1
 numpy==1.15.2
 protobuf==3.6.1
 pygame==1.9.6
-PyYAML==3.13
+PyYAML==5.4
 scipy==1.1.0
 six==1.11.0
 tensorboard==1.11.0