diff --git a/requirements-full.txt b/requirements-full.txt
index e19aa1c..de0cc53 100644
--- a/requirements-full.txt
+++ b/requirements-full.txt
@@ -28,7 +28,7 @@ pyqtgraph==0.10.0
 python-dateutil==2.6.0
 pytz==2016.10
 PyVISA==1.8
-PyYAML==5.1
+PyYAML==5.4
 requests==2.20.0
 scipy==0.18.1
 six==1.10.0