diff --git a/NotchBuddy/Sources/App/AppGridView.swift b/NotchBuddy/Sources/App/AppGridView.swift
index 0fb700f..7eea6ff 100644
--- a/NotchBuddy/Sources/App/AppGridView.swift
+++ b/NotchBuddy/Sources/App/AppGridView.swift
@@ -9,17 +9,19 @@ import AppKit
 struct DesktopAppSlot: Identifiable {
     let id: String
     let name: String
-    let bundleId: String
+    /// Tried in order: the first installed one wins.
+    let bundleIds: [String]
     let color: String
     let downloadURL: String
 }
 
 enum DesktopApps {
     static let claude = DesktopAppSlot(id: "app_claude", name: "Claude",
-                                       bundleId: "com.anthropic.claudefordesktop",
+                                       bundleIds: ["com.anthropic.claudefordesktop"],
                                        color: "#D97757", downloadURL: "https://claude.ai/download")
     static let chatGPT = DesktopAppSlot(id: "app_chatgpt", name: "ChatGPT",
-                                        bundleId: "com.openai.chat",
+                                        // New ChatGPT app first (its id is com.openai.codex), Classic as fallback.
+                                        bundleIds: ["com.openai.codex", "com.openai.chat"],
                                         color: "#10A37F", downloadURL: "https://chatgpt.com/download")
 }
 
@@ -128,14 +130,19 @@ struct AppPill: View {
         }
     }
 
+    /// The first installed bundle id of the slot.
+    private var bundleId: String? {
+        app.bundleIds.first { NSWorkspace.shared.urlForApplication(withBundleIdentifier: $0) != nil }
+    }
+
     private func refresh() {
-        appURL = NSWorkspace.shared.urlForApplication(withBundleIdentifier: app.bundleId)
-        isRunning = NSWorkspace.shared.runningApplications.contains { $0.bundleIdentifier == app.bundleId }
+        appURL = bundleId.flatMap { NSWorkspace.shared.urlForApplication(withBundleIdentifier: $0) }
+        isRunning = NSWorkspace.shared.runningApplications.contains { $0.bundleIdentifier == bundleId }
     }
 
     private func open() {
         SoundEngine.shared.play("blip")
-        if let running = NSWorkspace.shared.runningApplications.first(where: { $0.bundleIdentifier == app.bundleId }) {
+        if let running = NSWorkspace.shared.runningApplications.first(where: { $0.bundleIdentifier == bundleId }) {
             running.activate(options: .activateIgnoringOtherApps)
         } else if let appURL {
             NSWorkspace.shared.openApplication(at: appURL, configuration: .init(), completionHandler: nil)