diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a4f62e91..552f12b57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## 0.3.10 (unreleased)
 
+IMPROVEMENTS:
+
+* post-processor/vagrant: support instance-store AMIs built by Packer. [GH-502]
+
 BUG FIXES:
 
 * builder/all: timeout waiting for SSH connection is a failure. [GH-491]