diff --git a/requirements-freeze.txt b/requirements-freeze.txt
index 14128cd..5a2e2dd 100644
--- a/requirements-freeze.txt
+++ b/requirements-freeze.txt
@@ -39,7 +39,7 @@ pycodestyle==2.3.1
 pyflakes==1.6.0
 python-dateutil==2.7.3
 pytz==2018.4
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 scikit-learn==0.19.1
 scipy==1.0.0