diff -r a45f7dac4789 -r cbff6a49092a src/setup.py
--- a/src/setup.py	Thu Feb 23 11:52:20 2017 +0100
+++ b/src/setup.py	Thu Feb 23 11:55:02 2017 +0100
@@ -133,7 +133,8 @@
             "pytz",
             "requests",
             "six",
-            "sorl-thumbnail >= 12.4a1"
+            "sorl-thumbnail >= 12.4a1",
+            "djangorestframework >= 3.5"
         ],
     )