diff --git a/bun.lock b/bun.lock
index 77aeaad..8e4aee2 100644
--- a/bun.lock
+++ b/bun.lock
@@ -56,7 +56,7 @@
     },
     "packages/plugins/nexus-service": {
       "name": "@microvoid/convax-plugin-nexus-service",
-      "version": "0.3.9",
+      "version": "0.3.10",
       "dependencies": {
         "@microvoid/convax-nexus-mcp": "workspace:*",
       },
diff --git a/packages/plugins/nexus-service/convax-package.json b/packages/plugins/nexus-service/convax-package.json
index c65fbcb..acb0400 100644
--- a/packages/plugins/nexus-service/convax-package.json
+++ b/packages/plugins/nexus-service/convax-package.json
@@ -4,7 +4,7 @@
   "id": "nexus-service",
   "name": "Nexus · OpenRouter",
   "description": "Connects Convax to the Convax Workspace in Nexus for OpenRouter chat and live image-model generation through short-lived Data Tokens.",
-  "version": "0.3.9",
+  "version": "0.3.10",
   "license": "MIT",
   "compatibility": {
     "pluginSchema": "convax.plugin/7",
diff --git a/packages/plugins/nexus-service/package.json b/packages/plugins/nexus-service/package.json
index e8a2920..3a990c0 100644
--- a/packages/plugins/nexus-service/package.json
+++ b/packages/plugins/nexus-service/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@microvoid/convax-plugin-nexus-service",
-  "version": "0.3.9",
+  "version": "0.3.10",
   "private": true,
   "type": "module",
   "dependencies": {
diff --git a/packages/plugins/nexus-service/package/manifest.json b/packages/plugins/nexus-service/package/manifest.json
index 6d4107d..1d89e9f 100644
--- a/packages/plugins/nexus-service/package/manifest.json
+++ b/packages/plugins/nexus-service/package/manifest.json
@@ -3,7 +3,7 @@
   "id": "nexus-service",
   "name": "Nexus · OpenRouter",
   "description": "Connects Convax to the Convax Workspace in Nexus for OpenRouter chat and live image-model generation through short-lived Data Tokens.",
-  "version": "0.3.9",
+  "version": "0.3.10",
   "contributes": {
     "generation": {
       "models": [
diff --git a/tooling/official-marketplace-build.mjs b/tooling/official-marketplace-build.mjs
index c8d38de..014fbc4 100644
--- a/tooling/official-marketplace-build.mjs
+++ b/tooling/official-marketplace-build.mjs
@@ -30,6 +30,13 @@ export function officialBuildArgs({ bootstrapPreviousV1, changed, previous, v1Re
   return [...args, "--initial", "--v1-revision", v1Revision]
 }
 
+export function officialBuildInvocation(args) {
+  return {
+    args: [fileURLToPath(import.meta.resolve("@convax/marketplace-kit/cli")), ...args],
+    command: process.execPath,
+  }
+}
+
 function main() {
   const root = path.resolve(fileURLToPath(new URL("..", import.meta.url)))
   const v1Revision = process.env.GITHUB_SHA ?? spawnSync(
@@ -43,7 +50,8 @@ function main() {
     previous: process.env.CONVAX_MARKETPLACE_PREVIOUS,
     v1Revision,
   })
-  const result = spawnSync("convax-marketplace", args, {
+  const invocation = officialBuildInvocation(args)
+  const result = spawnSync(invocation.command, invocation.args, {
     cwd: root,
     encoding: "utf8",
     env: process.env,
diff --git a/tooling/official-marketplace.test.js b/tooling/official-marketplace.test.js
index 0f527a3..c4f3d82 100644
--- a/tooling/official-marketplace.test.js
+++ b/tooling/official-marketplace.test.js
@@ -2,11 +2,15 @@ import { describe, expect, test } from "bun:test"
 import { promises as fs } from "node:fs"
 import os from "node:os"
 import path from "node:path"
+import { fileURLToPath } from "node:url"
 import {
   assertOfficialMarketplaceSource,
   loadOfficialMarketplaceSource,
 } from "./official-marketplace.mjs"
-import { officialBuildArgs } from "./official-marketplace-build.mjs"
+import {
+  officialBuildArgs,
+  officialBuildInvocation,
+} from "./official-marketplace-build.mjs"
 import { fetchPreviousRegistry } from "./fetch-marketplace-previous.mjs"
 import { root, sha256 } from "./lib.mjs"
 
@@ -151,6 +155,24 @@ describe("Official and Builtin marketplace source", () => {
       .toThrow("v1 revision must be an exact Git SHA")
   })
 
+  test("runs the locked Marketplace CLI with the current Bun runtime", () => {
+    expect(officialBuildInvocation([
+      "build-index",
+      ".",
+      "--changed",
+      "dist/release-plan.json",
+    ])).toEqual({
+      args: [
+        fileURLToPath(import.meta.resolve("@convax/marketplace-kit/cli")),
+        "build-index",
+        ".",
+        "--changed",
+        "dist/release-plan.json",
+      ],
+      command: process.execPath,
+    })
+  })
+
   test("prefers production v2 and bootstraps from strict v1 only after an exact v2 404", async () => {
     const output = await fs.mkdtemp(path.join(os.tmpdir(), "convax-marketplace-previous-"))
     try {