diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35247aff4..c41d93746 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -175,6 +175,12 @@ The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
   `pr-merge-pool-supervisor` to the product-builder's supervisor launch list (18 total
   supervisors). Updated all numeric references, pre-flight checklists, and validation logic.
 
+- **`agents resource stop` now accepts `container-instance` resources** (#3250): The
+  `resource stop` command previously rejected `container-instance` resources with a
+  validation error, accepting only `devcontainer-instance`. Both types are now stoppable
+  via the CLI, consistent with the specification and the underlying `stop_container()`
+  implementation.
+
 ---
 
 ## [3.8.0] — 2026-04-05