diff --git a/index.html b/index.html
index 70fd4615c..ff5544915 100755
--- a/index.html
+++ b/index.html
@@ -94,7 +94,7 @@
             },{
               name: 'Flex',
               open: false,
-              buildProps: ['flex-direction', 'flex-wrap', 'justify-content', 'align-items', 'align-content', 'order', 'flex-grow', 'flex-shrink', 'align-self']
+              buildProps: ['flex-direction', 'flex-wrap', 'justify-content', 'align-items', 'align-content', 'order', 'flex-basis', 'flex-grow', 'flex-shrink', 'align-self']
             },{
               name: 'Dimension',
               open: false,