diff --git a/Release-Procedure.md b/Release-Procedure.md
index 5bad09a..655783e 100644
--- a/Release-Procedure.md
+++ b/Release-Procedure.md
@@ -12,7 +12,7 @@ Tag the release.  In a working copy of the openlayers/ol3 repo:
 
 ### Update website
 
-You need a local clone of the openlayers/openlayers.github.io repo.
+You need a local clone of the openlayers/openlayers.github.io repo, with the `build` branch checked out.
 
 Edit the `src/pages/index.hbs` page to link to the latest release (this will not be a working link until the release page is added below). Commit and push the change: