diff --git a/src/plugins/web-search-providers.runtime.test.ts b/src/plugins/web-search-providers.runtime.test.ts
index 18bb15fdfb6..5391e1aee69 100644
--- a/src/plugins/web-search-providers.runtime.test.ts
+++ b/src/plugins/web-search-providers.runtime.test.ts
@@ -4,6 +4,7 @@ type RegistryModule = typeof import("./registry.js");
 type RuntimeModule = typeof import("./runtime.js");
 type WebSearchProvidersRuntimeModule = typeof import("./web-search-providers.runtime.js");
 type ManifestRegistryModule = typeof import("./manifest-registry.js");
+type InstalledManifestRegistryModule = typeof import("./manifest-registry-installed.js");
 type PluginAutoEnableModule = typeof import("../config/plugin-auto-enable.js");
 type WebSearchProvidersSharedModule = typeof import("./web-search-providers.shared.js");
 
@@ -25,6 +26,7 @@ let setActivePluginRegistry: RuntimeModule["setActivePluginRegistry"];
 let resolvePluginWebSearchProviders: WebSearchProvidersRuntimeModule["resolvePluginWebSearchProviders"];
 let resolveRuntimeWebSearchProviders: WebSearchProvidersRuntimeModule["resolveRuntimeWebSearchProviders"];
 let resetWebSearchProviderSnapshotCacheForTests: WebSearchProvidersRuntimeModule["__testing"]["resetWebSearchProviderSnapshotCacheForTests"];
+let clearInstalledManifestRegistryCache: InstalledManifestRegistryModule["clearInstalledManifestRegistryCache"];
 let loadOpenClawPluginsMock: ReturnType<typeof vi.fn>;
 let loaderModule: typeof import("./loader.js");
 let manifestRegistryModule: ManifestRegistryModule;
@@ -343,6 +345,7 @@ describe("resolvePluginWebSearchProviders", () => {
     loaderModule = await import("./loader.js");
     pluginAutoEnableModule = await import("../config/plugin-auto-enable.js");
     webSearchProvidersSharedModule = await import("./web-search-providers.shared.js");
+    ({ clearInstalledManifestRegistryCache } = await import("./manifest-registry-installed.js"));
     ({ setActivePluginRegistry } = await import("./runtime.js"));
     ({
       resolvePluginWebSearchProviders,
@@ -353,6 +356,7 @@ describe("resolvePluginWebSearchProviders", () => {
 
   beforeEach(() => {
     resetWebSearchProviderSnapshotCacheForTests();
+    clearInstalledManifestRegistryCache();
     applyPluginAutoEnableSpy?.mockRestore();
     applyPluginAutoEnableSpy = vi
       .spyOn(pluginAutoEnableModule, "applyPluginAutoEnable")
@@ -385,6 +389,7 @@ describe("resolvePluginWebSearchProviders", () => {
   });
 
   afterEach(() => {
+    clearInstalledManifestRegistryCache();
     setActivePluginRegistry(createEmptyPluginRegistry());
     vi.restoreAllMocks();
   });