diff --git a/CHANGELOG.md b/CHANGELOG.md
index b1bc247f5..15ce0290a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,10 +2,12 @@
 
 BACKWARDS INCOMPATIBILITIES:
 
-  * The DigitalOcean builder no longer supports the v1 API which has been
+  * builder/digitalocean: no longer supports the v1 API which has been
       deprecated for some time. Most configurations should continue to
       work as long as you use the `api_token` field for auth.
   * builder/digitalocean: `image`, `region`, and `size` are now required.
+  * builder/openstack: auth parameters have been changed to better
+      reflect OS terminology. Existing environment variables still work.
 
 FEATURES: