diff --git a/hw6/requirements.txt b/hw6/requirements.txt
index 75752a8..80e99b7 100644
--- a/hw6/requirements.txt
+++ b/hw6/requirements.txt
@@ -16,7 +16,7 @@ Pillow==6.1.0
 protobuf==3.9.1
 python-dateutil==2.8.0
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.4
 scikit-learn==0.21.3
 scipy==1.3.1
 six==1.12.0