diff --git a/requirements.txt b/requirements.txt
index f67a700..96bbf3e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -94,7 +94,7 @@ PySocks==1.7.1
 python-dateutil==2.8.1
 pytz==2020.4
 PyWavelets==1.1.1
-PyYAML==5.3.1
+PyYAML==5.4
 pyzmq==20.0.0
 regex==2020.11.13
 requests==2.25.0