diff --git a/requirements.txt b/requirements.txt
index c27c0d2..6173d16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -84,7 +84,7 @@ python-jsonrpc-server==0.1.2
 python-language-server==0.26.1
 pytz==2019.1
 PyWavelets==1.0.3
-PyYAML==5.1.1
+PyYAML==5.4
 pyzmq==18.0.1
 qtconsole==4.4.4
 readme-renderer==24.0