diff --git a/CHANGES.md b/CHANGES.md
index e0cc734..afa6bcd 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,6 @@
 v1.0.0
 ======
-* breaking change: based on polymer 0.9, please check https://www.polymer-project.org/0.9/docs/migration.html
+* breaking change: based on polymer 1.0, please check https://www.polymer-project.org/1.0/docs/migration.html
 * breaking change: camelCase attributes renamed to all lower case with hyphen (e.g. maxZoom renamed to max-zoom)
 * added geojson support (thanks to Rob Beers)
 * fixed marker.zIndexOffset (thanks to Jason Shortall)