diff --git a/src/client/index.tsx b/src/client/index.tsx
index 41e8a67..206ce7b 100644
--- a/src/client/index.tsx
+++ b/src/client/index.tsx
@@ -340,10 +340,14 @@ const toggleSidebar = () => {
 const OpenEmojiPicker = define('OpenEmojiPicker', {
   cursor: 'pointer',
 
-  render({ props, parts: { Root } }) {
+  render({ props: { app, children }, parts: { Root } }) {
     return <Root onClick={() => openEmojiPicker((emoji) => {
-      console.log('Selected:', emoji)
-    })}>{props.children}</Root>
+      if (!app) return
+
+      fetch(`/api/apps/${app.name}/icon?icon=${emoji}`, { method: 'POST' })
+      app.icon = emoji
+      render()
+    })}>{children}</Root>
   }
 })
 
@@ -351,7 +355,7 @@ const AppDetail = ({ app }: { app: App }) => (
   <>
     <MainHeader>
       <MainTitle>
-        <OpenEmojiPicker>{app.icon ?? <StatusDot state={app.state} />}</OpenEmojiPicker>
+        <OpenEmojiPicker app={app}>{app.icon ?? <StatusDot state={app.state} />}</OpenEmojiPicker>
         &nbsp;
         {app.name}
       </MainTitle>
diff --git a/src/server/apps.ts b/src/server/apps.ts
index f47585d..9c8e4ef 100644
--- a/src/server/apps.ts
+++ b/src/server/apps.ts
@@ -1,5 +1,5 @@
 import type { Subprocess } from 'bun'
-import { existsSync, readdirSync, readFileSync, watch } from 'fs'
+import { existsSync, readdirSync, readFileSync, writeFileSync, watch } from 'fs'
 import { join } from 'path'
 import type { App as SharedApp, AppState, LogLine } from '../shared/types'
 
@@ -91,6 +91,20 @@ const loadApp = (dir: string): LoadResult => {
   }
 }
 
+const saveApp = (dir: string, pkg: any) => {
+  const path = join(APPS_DIR, dir, 'package.json')
+  writeFileSync(path, JSON.stringify(pkg, null, 2) + '\n')
+}
+
+export const updateAppIcon = (dir: string, icon: string) => {
+  const { pkg, error } = loadApp(dir)
+  if (error) throw new Error(error)
+
+  pkg.toes ??= {}
+  pkg.toes.icon = icon
+  saveApp(dir, pkg)
+}
+
 const isApp = (dir: string): boolean =>
   !loadApp(dir).error
 
diff --git a/src/server/index.tsx b/src/server/index.tsx
index 032eb32..3e2ff4f 100644
--- a/src/server/index.tsx
+++ b/src/server/index.tsx
@@ -1,5 +1,5 @@
 import { Hype } from 'hype'
-import { allApps, initApps, onChange, startApp, stopApp } from './apps'
+import { allApps, initApps, onChange, startApp, stopApp, updateAppIcon } from './apps'
 import type { App as SharedApp } from '../shared/types'
 
 const app = new Hype({ layout: false })
@@ -75,4 +75,17 @@ app.post('/api/apps/:app/stop', c => {
   return c.json({ ok: true })
 })
 
+app.post('/api/apps/:app/icon', c => {
+  const appName = c.req.param('app')
+  const icon = c.req.query('icon') ?? ''
+  if (!icon) return c.json({ error: 'No icon query param provided' })
+
+  try {
+    updateAppIcon(appName, icon)
+    return c.json({ ok: true })
+  } catch (error) {
+    return c.json({ error })
+  }
+})
+
 export default app.defaults