diff --git a/requirements.txt b/requirements.txt
index d20924d..7228b50 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.3
 PyWavelets==0.5.2
-PyYAML==3.12
+PyYAML==5.4
 retrying==1.3.3
 scikit-image==0.13.1
 scikit-learn==0.19.1