diff --git a/requirements.txt b/requirements.txt
index 25c8029..e798b68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ pyparsing==2.4.5
 python-dateutil==2.8.1
 pytz==2019.3
 PyWavelets==1.1.1
-PyYAML==5.2
+PyYAML==5.4
 regex==2019.12.9
 retrying==1.3.3
 scikit-image==0.16.2