diff --git a/requirements.txt b/requirements.txt
index 811f091..71a279d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ python-dateutil==2.7.5
 pytz==2018.7
 pyverdict==0.1.3.2
 pyxdg==0.25
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 scikit-learn==0.20.3
 scipy==1.2.1
diff --git a/requirements_python3.7.txt b/requirements_python3.7.txt
index 811f091..71a279d 100644
--- a/requirements_python3.7.txt
+++ b/requirements_python3.7.txt
@@ -46,7 +46,7 @@ python-dateutil==2.7.5
 pytz==2018.7
 pyverdict==0.1.3.2
 pyxdg==0.25
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 scikit-learn==0.20.3
 scipy==1.2.1