update to latest djangorestframework
diff --git a/containers/xos/Dockerfile b/containers/xos/Dockerfile
index f65eb37..aad9f3b 100644
--- a/containers/xos/Dockerfile
+++ b/containers/xos/Dockerfile
@@ -48,7 +48,7 @@
     django_rest_swagger \
     django-suit==0.3a1 \
     django-timezones \
-    djangorestframework==2.4.4 \
+    djangorestframework==3.3.3 \
     dnslib \
     lxml \
     markdown \