diff --git a/apps/web/src/components/Sidebar.tsx b/apps/web/src/components/Sidebar.tsx
index 5bb0b84f7..c6b3c487b 100644
--- a/apps/web/src/components/Sidebar.tsx
+++ b/apps/web/src/components/Sidebar.tsx
@@ -29,7 +29,6 @@ import { CSS } from "@dnd-kit/utilities";
 import {
   DEFAULT_RUNTIME_MODE,
   DEFAULT_MODEL_BY_PROVIDER,
-  type DesktopUpdateState,
   ProjectId,
   ThreadId,
   type GitStatusResult,
@@ -39,7 +38,8 @@ import { useMutation, useQueries, useQuery, useQueryClient } from "@tanstack/rea
 import { useLocation, useNavigate, useParams } from "@tanstack/react-router";
 import { useAppSettings } from "../appSettings";
 import { isElectron } from "../env";
-import { APP_STAGE_LABEL, APP_VERSION } from "../branding";
+import { APP_STAGE_LABEL } from "../branding";
+import { resolveDisplayedAppVersion, useDesktopUpdateState } from "../hooks/useDesktopUpdateState";
 import { isMacPlatform, newCommandId, newProjectId, newThreadId } from "../lib/utils";
 import { useStore } from "../store";
 import { isChatNewLocalShortcut, isChatNewShortcut, shortcutLabelForCommand } from "../keybindings";
@@ -301,7 +301,7 @@ export default function Sidebar() {
   const renamingInputRef = useRef<HTMLInputElement | null>(null);
   const dragInProgressRef = useRef(false);
   const suppressProjectClickAfterDragRef = useRef(false);
-  const [desktopUpdateState, setDesktopUpdateState] = useState<DesktopUpdateState | null>(null);
+  const desktopUpdateState = useDesktopUpdateState();
   const selectedThreadIds = useThreadSelectionStore((s) => s.selectedThreadIds);
   const toggleThreadSelection = useThreadSelectionStore((s) => s.toggleThread);
   const rangeSelectTo = useThreadSelectionStore((s) => s.rangeSelectTo);
@@ -1078,40 +1078,11 @@ export default function Sidebar() {
     threads,
   ]);
 
-  useEffect(() => {
-    if (!isElectron) return;
-    const bridge = window.desktopBridge;
-    if (
-      !bridge ||
-      typeof bridge.getUpdateState !== "function" ||
-      typeof bridge.onUpdateState !== "function"
-    ) {
-      return;
-    }
-
-    let disposed = false;
-    let receivedSubscriptionUpdate = false;
-    const unsubscribe = bridge.onUpdateState((nextState) => {
-      if (disposed) return;
-      receivedSubscriptionUpdate = true;
-      setDesktopUpdateState(nextState);
-    });
-
-    void bridge
-      .getUpdateState()
-      .then((nextState) => {
-        if (disposed || receivedSubscriptionUpdate) return;
-        setDesktopUpdateState(nextState);
-      })
-      .catch(() => undefined);
-
-    return () => {
-      disposed = true;
-      unsubscribe();
-    };
-  }, []);
-
   const showDesktopUpdateButton = isElectron && shouldShowDesktopUpdateButton(desktopUpdateState);
+  const displayedAppVersion = resolveDisplayedAppVersion({
+    desktopUpdateState,
+    isDesktopRuntime: isElectron,
+  });
 
   const desktopUpdateTooltip = desktopUpdateState
     ? getDesktopUpdateButtonTooltip(desktopUpdateState)
@@ -1239,7 +1210,7 @@ export default function Sidebar() {
           }
         />
         <TooltipPopup side="bottom" sideOffset={2}>
-          Version {APP_VERSION}
+          Version {displayedAppVersion}
         </TooltipPopup>
       </Tooltip>
     </div>
diff --git a/apps/web/src/hooks/useDesktopUpdateState.test.ts b/apps/web/src/hooks/useDesktopUpdateState.test.ts
new file mode 100644
index 000000000..d41f1f4d3
--- /dev/null
+++ b/apps/web/src/hooks/useDesktopUpdateState.test.ts
@@ -0,0 +1,52 @@
+import { describe, expect, it } from "vitest";
+import type { DesktopUpdateState } from "@t3tools/contracts";
+
+import { resolveDisplayedAppVersion } from "./useDesktopUpdateState";
+
+const baseDesktopUpdateState: DesktopUpdateState = {
+  enabled: true,
+  status: "up-to-date",
+  currentVersion: "0.0.11",
+  hostArch: "arm64",
+  appArch: "arm64",
+  runningUnderArm64Translation: false,
+  availableVersion: null,
+  downloadedVersion: null,
+  downloadPercent: null,
+  checkedAt: null,
+  message: null,
+  errorContext: null,
+  canRetry: false,
+};
+
+describe("resolveDisplayedAppVersion", () => {
+  it("keeps the fallback version outside desktop runtime", () => {
+    expect(
+      resolveDisplayedAppVersion({
+        desktopUpdateState: baseDesktopUpdateState,
+        fallbackVersion: "0.0.10",
+        isDesktopRuntime: false,
+      }),
+    ).toBe("0.0.10");
+  });
+
+  it("prefers the desktop runtime version when available", () => {
+    expect(
+      resolveDisplayedAppVersion({
+        desktopUpdateState: baseDesktopUpdateState,
+        fallbackVersion: "0.0.10",
+        isDesktopRuntime: true,
+      }),
+    ).toBe("0.0.11");
+  });
+
+  it("falls back when the runtime state is missing", () => {
+    expect(
+      resolveDisplayedAppVersion({
+        desktopUpdateState: null,
+        fallbackVersion: "0.0.10",
+        isDesktopRuntime: true,
+      }),
+    ).toBe("0.0.10");
+  });
+});
diff --git a/apps/web/src/hooks/useDesktopUpdateState.ts b/apps/web/src/hooks/useDesktopUpdateState.ts
new file mode 100644
index 000000000..40bf1418c
--- /dev/null
+++ b/apps/web/src/hooks/useDesktopUpdateState.ts
@@ -0,0 +1,63 @@
+import { useEffect, useState } from "react";
+import type { DesktopUpdateState } from "@t3tools/contracts";
+
+import { APP_VERSION } from "../branding";
+import { isElectron } from "../env";
+
+interface ResolveDisplayedAppVersionInput {
+  readonly desktopUpdateState: DesktopUpdateState | null;
+  readonly fallbackVersion?: string;
+  readonly isDesktopRuntime: boolean;
+}
+
+export function resolveDisplayedAppVersion({
+  desktopUpdateState,
+  fallbackVersion = APP_VERSION,
+  isDesktopRuntime,
+}: ResolveDisplayedAppVersionInput): string {
+  if (!isDesktopRuntime) {
+    return fallbackVersion;
+  }
+
+  const runtimeVersion = desktopUpdateState?.currentVersion.trim();
+  return runtimeVersion && runtimeVersion.length > 0 ? runtimeVersion : fallbackVersion;
+}
+
+export function useDesktopUpdateState(): DesktopUpdateState | null {
+  const [desktopUpdateState, setDesktopUpdateState] = useState<DesktopUpdateState | null>(null);
+
+  useEffect(() => {
+    if (!isElectron) return;
+    const bridge = window.desktopBridge;
+    if (
+      !bridge ||
+      typeof bridge.getUpdateState !== "function" ||
+      typeof bridge.onUpdateState !== "function"
+    ) {
+      return;
+    }
+
+    let disposed = false;
+    let receivedSubscriptionUpdate = false;
+    const unsubscribe = bridge.onUpdateState((nextState) => {
+      if (disposed) return;
+      receivedSubscriptionUpdate = true;
+      setDesktopUpdateState(nextState);
+    });
+
+    void bridge
+      .getUpdateState()
+      .then((nextState) => {
+        if (disposed || receivedSubscriptionUpdate) return;
+        setDesktopUpdateState(nextState);
+      })
+      .catch(() => undefined);
+
+    return () => {
+      disposed = true;
+      unsubscribe();
+    };
+  }, []);
+
+  return desktopUpdateState;
+}
diff --git a/apps/web/src/routes/_chat.settings.tsx b/apps/web/src/routes/_chat.settings.tsx
index 93e074442..4a0946490 100644
--- a/apps/web/src/routes/_chat.settings.tsx
+++ b/apps/web/src/routes/_chat.settings.tsx
@@ -6,6 +6,7 @@ import { getModelOptions, normalizeModelSlug } from "@t3tools/shared/model";
 
 import { MAX_CUSTOM_MODEL_LENGTH, useAppSettings } from "../appSettings";
 import { isElectron } from "../env";
+import { resolveDisplayedAppVersion, useDesktopUpdateState } from "../hooks/useDesktopUpdateState";
 import { useTheme } from "../hooks/useTheme";
 import { serverConfigQueryOptions } from "../lib/serverReactQuery";
 import { ensureNativeApi } from "../nativeApi";
@@ -13,7 +14,6 @@ import { preferredTerminalEditor } from "../terminal-links";
 import { Button } from "../components/ui/button";
 import { Input } from "../components/ui/input";
 import { Switch } from "../components/ui/switch";
-import { APP_VERSION } from "../branding";
 import { SidebarInset } from "~/components/ui/sidebar";
 
 const THEME_OPTIONS = [
@@ -84,6 +84,7 @@ function SettingsRouteView() {
   const { theme, setTheme, resolvedTheme } = useTheme();
   const { settings, defaults, updateSettings } = useAppSettings();
   const serverConfigQuery = useQuery(serverConfigQueryOptions());
+  const desktopUpdateState = useDesktopUpdateState();
   const [isOpeningKeybindings, setIsOpeningKeybindings] = useState(false);
   const [openKeybindingsError, setOpenKeybindingsError] = useState<string | null>(null);
   const [customModelInputByProvider, setCustomModelInputByProvider] = useState<
@@ -98,6 +99,10 @@ function SettingsRouteView() {
   const codexBinaryPath = settings.codexBinaryPath;
   const codexHomePath = settings.codexHomePath;
   const keybindingsConfigPath = serverConfigQuery.data?.keybindingsConfigPath ?? null;
+  const displayedAppVersion = resolveDisplayedAppVersion({
+    desktopUpdateState,
+    isDesktopRuntime: isElectron,
+  });
 
   const openKeybindingsFile = useCallback(() => {
     if (!keybindingsConfigPath) return;
@@ -573,7 +578,9 @@ function SettingsRouteView() {
                     Current version of the application.
                   </p>
                 </div>
-                <code className="text-xs font-medium text-muted-foreground">{APP_VERSION}</code>
+                <code className="text-xs font-medium text-muted-foreground">
+                  {displayedAppVersion}
+                </code>
               </div>
             </section>
           </div>