diff --git a/server.js b/server.js
index 2d3d397..8245e5f 100644
--- a/server.js
+++ b/server.js
@@ -252,7 +252,7 @@ app.post('/api/hero-upload', requireAuth, (req, res) => {
     const buffer = Buffer.from(matches[2], 'base64');
     const uploadDir = path.join(__dirname, 'public', 'uploads');
     if (!fs.existsSync(uploadDir)) fs.mkdirSync(uploadDir, { recursive: true });
-    const filename = `hero.${ext}`;
+    const filename = `hero-${Date.now()}.${ext}`;
     fs.writeFileSync(path.join(uploadDir, filename), buffer);
     const publicPath = `/uploads/${filename}?t=${Date.now()}`;
     res.json({ path: publicPath });
@@ -272,7 +272,7 @@ app.post('/api/mood-upload', requireAuth, (req, res) => {
     const buffer = Buffer.from(matches[2], 'base64');
     const uploadDir = path.join(__dirname, 'public', 'uploads');
     if (!fs.existsSync(uploadDir)) fs.mkdirSync(uploadDir, { recursive: true });
-    const filename = `mood-${index}.${ext}`;
+    const filename = `mood-${index}-${Date.now()}.${ext}`;
     fs.writeFileSync(path.join(uploadDir, filename), buffer);
     res.json({ path: `/uploads/${filename}?t=${Date.now()}` });
   } catch (e) {