diff --git a/requirements.txt b/requirements.txt
index 53b3e40..67416af 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,9 @@
 coreapi==2.3.1
-Django==1.11.10
+Django==1.11.15
 django-cors-headers==2.1.0
 django-split-settings==0.2.5
 djangorestframework==3.6.4
 psycopg2==2.7.3.2
-PyYAML==3.12
+PyYAML==3.12 ; python_version < 3.7
+PyYAML==3.13 ; python_version >= 3.7
 uWSGI==2.0.15