diff --git a/.env.example b/.env.example
index 3f6ac1d..db8fcbb 100644
--- a/.env.example
+++ b/.env.example
@@ -10,7 +10,7 @@
 PROJECT_NAME=jama
 
 # Image version to run (set by build.sh, or use 'latest')
-JAMA_VERSION=0.9.10
+JAMA_VERSION=0.9.11
 
 # App port — the host port Docker maps to the container
 PORT=3000
diff --git a/backend/package.json b/backend/package.json
index a20e1c0..c631dc1 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jama-backend",
-  "version": "0.9.10",
+  "version": "0.9.11",
   "description": "TeamChat backend server",
   "main": "src/index.js",
   "scripts": {
diff --git a/backend/src/routes/messages.js b/backend/src/routes/messages.js
index eff426a..d8f90f7 100644
--- a/backend/src/routes/messages.js
+++ b/backend/src/routes/messages.js
@@ -151,6 +151,7 @@ router.delete('/:id', authMiddleware, (req, res) => {
   if (!canDelete) return res.status(403).json({ error: 'Cannot delete this message' });
 
   db.prepare("UPDATE messages SET is_deleted = 1, content = null, image_url = null WHERE id = ?").run(message.id);
+  io.to(`group:${message.group_id}`).emit('message:deleted', { messageId: message.id, groupId: message.group_id });
   res.json({ success: true, messageId: message.id });
 });
 
@@ -169,11 +170,17 @@ router.post('/:id/reactions', authMiddleware, (req, res) => {
   
   if (existing) {
     db.prepare('DELETE FROM reactions WHERE id = ?').run(existing.id);
-    res.json({ removed: true, emoji });
   } else {
     db.prepare('INSERT INTO reactions (message_id, user_id, emoji) VALUES (?, ?, ?)').run(message.id, req.user.id, emoji);
-    res.json({ added: true, emoji });
   }
+
+  const reactions = db.prepare(`
+    SELECT r.emoji, r.user_id, u.name as user_name
+    FROM reactions r JOIN users u ON r.user_id = u.id
+    WHERE r.message_id = ?
+  `).all(message.id);
+  io.to(`group:${message.group_id}`).emit('reaction:updated', { messageId: message.id, reactions });
+  res.json({ reactions });
 });
 
 
diff --git a/build.sh b/build.sh
index 9e684e2..f18c9c0 100644
--- a/build.sh
+++ b/build.sh
@@ -13,7 +13,7 @@
 # ─────────────────────────────────────────────────────────────
 set -euo pipefail
 
-VERSION="${1:-0.9.10}"
+VERSION="${1:-0.9.11}"
 ACTION="${2:-}"
 REGISTRY="${REGISTRY:-}"
 IMAGE_NAME="jama"
diff --git a/frontend/package.json b/frontend/package.json
index c998911..24ff3a1 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jama-frontend",
-  "version": "0.9.10",
+  "version": "0.9.11",
   "private": true,
   "scripts": {
     "dev": "vite",