diff --git a/requirements.txt b/requirements.txt
index 8a2dd8d..65c3cc2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ python-dateutil==2.8.1
 python-jsonrpc-server==0.3.4
 python-language-server==0.31.10
 pytz==2020.1
-PyYAML==5.3.1
+PyYAML==5.4
 requests==2.23.0
 requests-oauthlib==1.3.0
 scikit-learn==0.22.1