diff --git a/dotmole/requirements.txt b/dotmole/requirements.txt
old mode 100755
new mode 100644
index dad303c..268bf6d
--- a/dotmole/requirements.txt
+++ b/dotmole/requirements.txt
@@ -46,7 +46,7 @@ pyparsing==2.4.6
 python-dateutil==2.8.1
 python-editor==1.0.4
 pytz==2019.3
-PyYAML==5.3
+PyYAML==5.4
 scipy==1.4.1
 six==1.13.0
 SQLAlchemy==1.3.12