diff --git a/scripts/lib/docker-e2e-scenarios.mjs b/scripts/lib/docker-e2e-scenarios.mjs
index 9696f8a6184..28acd792a13 100644
--- a/scripts/lib/docker-e2e-scenarios.mjs
+++ b/scripts/lib/docker-e2e-scenarios.mjs
@@ -341,10 +341,14 @@ const releasePathChunks = {
     }),
   ],
   "package-update": [
-    npmLane("install-e2e", "OPENCLAW_E2E_MODELS=both pnpm test:install:e2e", {
-      resources: ["service"],
-      weight: 4,
-    }),
+    npmLane(
+      "install-e2e",
+      "OPENCLAW_INSTALL_TAG=beta OPENCLAW_E2E_MODELS=both pnpm test:install:e2e",
+      {
+        resources: ["service"],
+        weight: 4,
+      },
+    ),
     npmLane(
       "npm-onboard-channel-agent",
       "OPENCLAW_SKIP_DOCKER_BUILD=1 pnpm test:docker:npm-onboard-channel-agent",
diff --git a/test/scripts/docker-build-helper.test.ts b/test/scripts/docker-build-helper.test.ts
index c7fcb204063..a5db1bf9808 100644
--- a/test/scripts/docker-build-helper.test.ts
+++ b/test/scripts/docker-build-helper.test.ts
@@ -3,6 +3,7 @@ import { describe, expect, it } from "vitest";
 
 const HELPER_PATH = "scripts/lib/docker-build.sh";
 const DOCKER_ALL_SCHEDULER_PATH = "scripts/test-docker-all.mjs";
+const DOCKER_E2E_SCENARIOS_PATH = "scripts/lib/docker-e2e-scenarios.mjs";
 const CENTRALIZED_BUILD_SCRIPTS = [
   "scripts/docker/setup.sh",
   "scripts/e2e/browser-cdp-snapshot-docker.sh",
@@ -47,4 +48,12 @@ describe("docker build helper", () => {
     expect(scheduler).toContain("withResolvedPnpmCommand");
     expect(scheduler).toContain("OPENCLAW_DOCKER_ALL_PNPM_COMMAND");
   });
+
+  it("runs release installer E2E against the npm beta tag", () => {
+    const scenarios = readFileSync(DOCKER_E2E_SCENARIOS_PATH, "utf8");
+
+    expect(scenarios).toContain(
+      '"OPENCLAW_INSTALL_TAG=beta OPENCLAW_E2E_MODELS=both pnpm test:install:e2e"',
+    );
+  });
 });