diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 89ce446..88bd9eb 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
   "plugins/last9": "0.2.0",
-  "plugins/opencode-last9": "0.3.0"
+  "plugins/opencode-last9": "0.4.0"
 }
diff --git a/plugins/opencode-last9/CHANGELOG.md b/plugins/opencode-last9/CHANGELOG.md
index 33d7932..bbbf497 100644
--- a/plugins/opencode-last9/CHANGELOG.md
+++ b/plugins/opencode-last9/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.0](https://github.com/last9/ai-toolkit/compare/opencode-last9-v0.3.0...opencode-last9-v0.4.0) (2026-10-01)
+
+
+### Features
+
+* **skills:** add last9-api skill with a deterministic token-handling CLI ([#21](https://github.com/last9/ai-toolkit/issues/21)) ([ec0d201](https://github.com/last9/ai-toolkit/commit/ec0d2016124ea9d70cc68341ff6cc93a03e8c9c5))
+
 ## [0.3.0](https://github.com/last9/ai-toolkit/compare/opencode-last9-v0.2.0...opencode-last9-v0.3.0) (2026-08-24)
 
 
diff --git a/plugins/opencode-last9/package.json b/plugins/opencode-last9/package.json
index e9d0d4f..15b63c9 100644
--- a/plugins/opencode-last9/package.json
+++ b/plugins/opencode-last9/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@last9/opencode-plugin",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Last9 observability for OpenCode: registers the hosted Last9 MCP server (logs, metrics, traces, alerts, deploys) and ships investigation skills.",
   "license": "MIT",
   "type": "module",