diff --git a/CHANGELOG.md b/CHANGELOG.md
index d18aba55f..924fdb604 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@ IMPROVEMENTS:
     `capture_name_prefix` [GH-3537]
   * builder/azure: Support for custom images [GH-3575]
   * builder/azure: Removed superfluous polling code for deployments [GH-3638]
+  * builder/azure: Made `tenant_id` optional [GH-3643]
   * builder/google: Added support for `image_family` [GH-3503]
   * builder/null: Can now be used with WinRM [GH-2525]
   * builder/parallels: Now pauses between `boot_command` entries when running