diff --git a/requirements.txt b/requirements.txt
index 17ee0f7c..f059ea19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,3 +9,4 @@ Pillow==5.0.0
 django-active-link==0.1.2
 arrow==0.12.1
 django-filter==2.0.0.dev1
+django-mptt==0.9.0