diff --git a/requirements.txt b/requirements.txt
index b5f330d..2cc0c22 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ setuptools==46.0.0
 Unidecode==1.1.1
 webargs==5.5.3
 Werkzeug==0.16.1
-PyYAML==5.3
+PyYAML==5.3.1
 simplejson==3.17.0
 pathlib2==2.3.5
 cookiecutter==1.7.0