diff --git a/bak/requirements.txt b/bak/requirements.txt
index e71cf59..2cbc525 100644
--- a/bak/requirements.txt
+++ b/bak/requirements.txt
@@ -156,7 +156,7 @@ python-debian==0.1.33
 python3-protobuf==2.5.0
 pytz==2018.5
 pyxdg==0.26
-PyYAML==3.13
+PyYAML==5.4
 pyzmq==17.1.2
 qtconsole==4.4.1
 regex==2017.4.5