diff --git a/analysis_requirements.txt b/analysis_requirements.txt
index c485912..f01cc64 100644
--- a/analysis_requirements.txt
+++ b/analysis_requirements.txt
@@ -52,7 +52,7 @@ Pygments==2.1.3
 pyparsing==2.1.1
 python-dateutil==2.5.3
 pytz==2016.3
-PyYAML==3.11
+PyYAML==5.4
 pyzmq==18.1.0
 qtconsole==4.2.1
 requests==2.9.1
diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 56a7b55..fcecf7a
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ Naked==0.1.31
 numpy==1.17.1
 psycopg2==2.7.3.2
 pycrypto==2.6.1
-PyYAML==3.11
+PyYAML==5.4
 requests==2.9.1
 shellescape==3.4.1
 SQLAlchemy==0.9.8