diff --git a/demo-server/requirements.txt b/demo-server/requirements.txt
index 2aa34de..2e5e967 100644
--- a/demo-server/requirements.txt
+++ b/demo-server/requirements.txt
@@ -36,7 +36,7 @@ pyqtgraph==0.10.0
 python-dateutil==2.8.1
 python-louvain==0.13
 pytz==2019.3
-PyYAML==5.3
+PyYAML==5.4
 requests==2.22.0
 scikit-learn==0.22.1
 scipy==1.4.1
diff --git a/requirements.txt b/requirements.txt
index fa83d65..46897cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pyqtgraph==0.10.0
 python-dateutil==2.8.1
 python-louvain==0.13
 pytz==2019.3
-PyYAML==5.3
+PyYAML==5.4
 requests==2.22.0
 scikit-learn==0.22.1
 scipy==1.4.1