diff --git a/modules/rubiconBidAdapter.js b/modules/rubiconBidAdapter.js
index 2f4f3e01ce4..4e5ef22c2ce 100644
--- a/modules/rubiconBidAdapter.js
+++ b/modules/rubiconBidAdapter.js
@@ -34,6 +34,9 @@ var sizeMap = {
   35: '980x150',
   37: '468x400',
   38: '930x180',
+  39: '750x100',
+  40: '750x200',
+  41: '750x300',
   43: '320x50',
   44: '300x50',
   48: '300x300',