diff --git a/packages/cli/src/ui/components/views/ExtensionDetails.test.tsx b/packages/cli/src/ui/components/views/ExtensionDetails.test.tsx
index 50947d1127..d7e4fb8ae4 100644
--- a/packages/cli/src/ui/components/views/ExtensionDetails.test.tsx
+++ b/packages/cli/src/ui/components/views/ExtensionDetails.test.tsx
@@ -108,12 +108,16 @@ describe('ExtensionDetails', () => {
   });
 
   it('should NOT call onInstall when Enter is pressed and already installed', async () => {
+    vi.useFakeTimers();
     const { stdin } = renderDetails(true);
     await React.act(async () => {
       stdin.write('\r'); // Enter
     });
-    // Wait a bit to ensure it's not called
-    await new Promise((resolve) => setTimeout(resolve, 100));
+    // Advance timers to trigger the keypress flush
+    await React.act(async () => {
+      vi.runAllTimers();
+    });
     expect(mockOnInstall).not.toHaveBeenCalled();
+    vi.useRealTimers();
   });
 });
diff --git a/packages/cli/src/ui/components/views/ExtensionDetails.tsx b/packages/cli/src/ui/components/views/ExtensionDetails.tsx
index 7135eb1ba4..7ee38c0e54 100644
--- a/packages/cli/src/ui/components/views/ExtensionDetails.tsx
+++ b/packages/cli/src/ui/components/views/ExtensionDetails.tsx
@@ -5,6 +5,7 @@
  */
 
 import type React from 'react';
+import { useState } from 'react';
 import { Box, Text } from 'ink';
 import type { RegistryExtension } from '../../../config/extensionRegistryClient.js';
 import { useKeypress } from '../../hooks/useKeypress.js';
@@ -17,12 +18,10 @@ export interface ExtensionDetailsProps {
   onBack: () => void;
   onInstall: (
     requestConsentOverride: (consent: string) => Promise<boolean>,
-  ) => void;
+  ) => void | Promise<void>;
   isInstalled: boolean;
 }
 
-import { useState } from 'react';
-
 export function ExtensionDetails({
   extension,
   onBack,
@@ -59,7 +58,7 @@ export function ExtensionDetails({
       }
       if (keyMatchers[Command.RETURN](key) && !isInstalled && !isInstalling) {
         setIsInstalling(true);
-        onInstall(
+        void onInstall(
           (prompt: string) =>
             new Promise((resolve) => {
               setConsentRequest({ prompt, resolve });
diff --git a/packages/cli/src/ui/components/views/ExtensionRegistryView.tsx b/packages/cli/src/ui/components/views/ExtensionRegistryView.tsx
index b939dab089..57178f21c8 100644
--- a/packages/cli/src/ui/components/views/ExtensionRegistryView.tsx
+++ b/packages/cli/src/ui/components/views/ExtensionRegistryView.tsx
@@ -255,9 +255,9 @@ export function ExtensionRegistryView({
         <ExtensionDetails
           extension={selectedExtension}
           onBack={handleBack}
-          onInstall={(requestConsentOverride) =>
-            handleInstall(selectedExtension, requestConsentOverride)
-          }
+          onInstall={async (requestConsentOverride) => {
+            await handleInstall(selectedExtension, requestConsentOverride);
+          }}
           isInstalled={installedExtensions.some(
             (e) => e.name === selectedExtension.extensionName,
           )}