diff --git a/python_requirements.txt b/python_requirements.txt
index a668bd1..c6b0cc4 100644
--- a/python_requirements.txt
+++ b/python_requirements.txt
@@ -154,7 +154,7 @@ pytz==2018.7
 PyWavelets==1.0.1
 pywin32==223
 pywinpty==0.5.5
-PyYAML==5.1
+PyYAML==5.4
 pyzmq==17.1.2
 QtAwesome==0.5.3
 qtconsole==4.4.3