diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a8dc1d..c2b5b04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,18 @@ Pre-1.0 versions treat MINOR as feature releases and PATCH as bug fixes.
 
 ---
 
+## [0.4.5] — 2026-04-11
+
+### Bug Fixes
+- **Sidebar version refresh not updating** — clicking the refresh icon now clears the stale version immediately (shows spinner) and adds a `?_t=` cache-bust parameter so the browser never serves a cached response. Same fix applied to the "Retry" button in the error state.
+- **`uptime` and `kill` missing from exec allowlist** — caused `GET /api/nixserver/system/info` to throw "Command not allowed", returning 500 and leaving Hostname/OS as `…` on the dashboard.
+- **Version fetch auto-retry** — when the version API fails (e.g. during service restart after upgrade), the sidebar now automatically retries every 5 s until it succeeds instead of permanently showing "Version unavailable".
+
+### New Features
+- **Day/Night mode toggle** — sun/moon flip switch at the right end of the dashboard info bar. Light palette: page `#f0f4f8`, cards `#ffffff`. Preference persisted to `localStorage`. All pages switch via seven `[data-theme="light"]` CSS overrides in `index.css` without touching individual page files.
+
+---
+
 ## [0.4.4] — 2026-04-11
 
 ### New Features
diff --git a/nixserver/src/components/Layout.tsx b/nixserver/src/components/Layout.tsx
index 7e9d3df..f5f0f50 100644
--- a/nixserver/src/components/Layout.tsx
+++ b/nixserver/src/components/Layout.tsx
@@ -465,10 +465,16 @@ export default function Layout() {
   const [versionError, setVersionError] = useState(false)
   const [upgradeState, setUpgradeState] = useState<'idle' | 'confirm' | 'running' | 'done' | 'error'>('idle')
 
-  const fetchVersion = useCallback(async () => {
+  const fetchVersion = useCallback(async (manual = false) => {
     setVersionError(false)
+    // On a manual refresh, clear the stale value so the spinner shows
+    if (manual) setVersionInfo(null)
     try {
-      const { data } = await api.get('/nixserver/system/version', { timeout: 10_000 })
+      const { data } = await api.get('/nixserver/system/version', {
+        timeout: 10_000,
+        // Cache-bust so the browser never serves a stale version response
+        params: { _t: Date.now() },
+      })
       setVersionInfo(data.data)
     } catch {
       setVersionError(true)
@@ -685,7 +691,7 @@ export default function Layout() {
                   )}
                 </div>
                 <button
-                  onClick={fetchVersion}
+                  onClick={() => fetchVersion(true)}
                   title="Check for updates"
                   className="text-[#4a5568] hover:text-[#94a3b8] transition-colors"
                 >
@@ -741,7 +747,7 @@ export default function Layout() {
           ) : versionError ? (
             <div className="flex items-center justify-between px-1 py-1">
               <span className="text-[#4a5568] text-[10px]">Version unavailable</span>
-              <button onClick={fetchVersion} title="Retry" className="text-[#4a5568] hover:text-[#94a3b8] transition-colors">
+              <button onClick={() => fetchVersion(true)} title="Retry" className="text-[#4a5568] hover:text-[#94a3b8] transition-colors">
                 <RefreshCcw size={10} />
               </button>
             </div>
diff --git a/package.json b/package.json
index c895fc9..a6f7cc4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nixpanel-server",
-  "version": "0.4.4",
+  "version": "0.4.5",
   "private": true,
   "workspaces": [
     "server",
diff --git a/server/src/app.ts b/server/src/app.ts
index 8cffc30..abcd1ab 100644
--- a/server/src/app.ts
+++ b/server/src/app.ts
@@ -73,7 +73,7 @@ export async function buildApp() {
 
   fastify.get('/api/health', async () => ({
     status: 'ok',
-    version: '0.4.4',
+    version: '0.4.5',
     timestamp: new Date().toISOString(),
   }))