diff --git a/lessons/lesson.9/requirements.txt b/lessons/lesson.9/requirements.txt
index 08addc1..a942557 100644
--- a/lessons/lesson.9/requirements.txt
+++ b/lessons/lesson.9/requirements.txt
@@ -1,3 +1,3 @@
 Django==2.2.2
 django-debug-toolbar==1.11
-djangorestframework==3.9.4
+djangorestframework==3.11.2