diff --git a/DeepPATH_code/requirements.txt b/DeepPATH_code/requirements.txt
old mode 100755
new mode 100644
index 01cc97b..699fc47
--- a/DeepPATH_code/requirements.txt
+++ b/DeepPATH_code/requirements.txt
@@ -176,7 +176,7 @@ python-jose==2.0.2
 pytools==2019.1
 pytz==2017.3
 PyWavelets==1.1.1
-PyYAML==3.12
+PyYAML==5.4
 pyzmq==17.1.0
 qtconsole==4.3.1
 rdflib==4.2.2