diff --git a/src/gateway/server-methods/plugins.test.ts b/src/gateway/server-methods/plugins.test.ts
index 18c228f9ce39..0e0d226c14d0 100644
--- a/src/gateway/server-methods/plugins.test.ts
+++ b/src/gateway/server-methods/plugins.test.ts
@@ -7,6 +7,7 @@ import type {
   InstallPolicyWarningOccurrence,
 } from "../../plugins/install-security-scan.types.js";
 import { parseInstallPolicyResponse } from "../../security/install-policy-response.js";
+import { drainGlobalSingletonLifecycleState } from "../../shared/global-singleton.js";
 
 type InstallPolicyWarningScanIdentity = InstallPolicyWarningOccurrence["scan"];
 type ManagementServiceModule = typeof import("../../plugins/management-service.js");
@@ -559,6 +560,47 @@ describe("plugin management Gateway handlers", () => {
     expect(managementMocks.install).toHaveBeenCalledOnce();
   });
 
+  it("revokes install-policy acknowledgements when the Gateway restarts", async () => {
+    managementMocks.install.mockRejectedValueOnce(
+      new ManagedPluginLifecycleError("Install requires approval", {
+        installPolicyResolvedRequest: {
+          source: "official",
+          spec: "@openclaw/diffs@1.0.0",
+          pluginId: "diffs",
+          mode: "install",
+        },
+        installPolicyWarning: warningOccurrence({
+          targetName: "diffs",
+          targetType: "plugin",
+          requestMode: "install",
+          reason: "Review required",
+        }),
+      }),
+    );
+    const warning = await callHandler("plugins.install", {
+      source: "official",
+      pluginId: "diffs",
+    });
+    const acknowledgementToken = expectDefined(
+      (warning.error as { details?: { acknowledgementToken?: unknown } }).details
+        ?.acknowledgementToken,
+      "expected install-policy acknowledgement token",
+    );
+
+    await drainGlobalSingletonLifecycleState("restart");
+    const retry = await callHandler("plugins.install", {
+      source: "official",
+      pluginId: "diffs",
+      installPolicyWarningAcknowledgement: acknowledgementToken,
+    });
+
+    expect(retry.error).toMatchObject({
+      code: "INVALID_REQUEST",
+      message: expect.stringContaining("expired or does not match this plugin"),
+    });
+    expect(managementMocks.install).toHaveBeenCalledOnce();
+  });
+
   it("carries earlier approvals into a token for a later scan-stage warning", async () => {
     const warning: InstallPolicyWarningDetails = {
       targetName: "demo-plugin",
diff --git a/src/gateway/server-methods/plugins.ts b/src/gateway/server-methods/plugins.ts
index 1be23617ac80..ad643ae7d715 100644
--- a/src/gateway/server-methods/plugins.ts
+++ b/src/gateway/server-methods/plugins.ts
@@ -27,6 +27,7 @@ import {
   type ManagedPluginInstallRequest,
   type ManagedPluginSourceInstallRequest,
 } from "../../plugins/management-service.js";
+import { resolveGlobalMap } from "../../shared/global-singleton.js";
 import { buildGatewayReloadPlan } from "../config-reload-plan.js";
 import { resolveGatewayReloadSettings } from "../config-reload-settings.js";
 import { readInstallPolicyWarningErrorDetails } from "../install-policy-warning-error-details.js";
@@ -43,7 +44,10 @@ type InstallPolicyAcknowledgement = {
   warnings: InstallPolicyWarningOccurrence[];
 };
 
-const installPolicyAcknowledgements = new Map<string, InstallPolicyAcknowledgement>();
+const installPolicyAcknowledgements = resolveGlobalMap<string, InstallPolicyAcknowledgement>(
+  Symbol.for("openclaw.installPolicyAcknowledgements"),
+  "close-and-restart",
+);
 
 function installPolicyRequestKey(request: PluginsInstallParams): string {
   return request.source === "clawhub"