diff --git a/plone-5.1.x.cfg b/plone-5.1.x.cfg
index 025bc5730b..5b30c2da1b 100644
--- a/plone-5.1.x.cfg
+++ b/plone-5.1.x.cfg
@@ -17,3 +17,4 @@ pyparsing = 2.4.7
 six = 1.12.0
 stdlib-list = 0.6.0
 zest.pocompile= 1.6.0
+plone.rest = 3.0.1