diff --git a/requirements-freeze.txt b/requirements-freeze.txt
index 6d7259b..8647304 100644
--- a/requirements-freeze.txt
+++ b/requirements-freeze.txt
@@ -38,7 +38,7 @@ pymongo==3.0.1
 pyparsing==2.0.1
 python-dateutil==1.5
 pytz==2015.2
-PyYAML==3.10
+PyYAML==5.4
 requests==2.6.0
 scipy==0.13.3
 six==1.5.2
diff --git a/requirements.txt b/requirements.txt
index f0daaa4..60bbb17 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ pymongo==3.0.1
 pyparsing==2.0.1
 python-dateutil==1.5
 pytz==2018.7
-PyYAML==3.10
+PyYAML==5.4
 requests==2.6.0
 scipy==0.13.3
 six==1.5.2