diff --git a/api/openapi.yaml b/api/openapi.yaml
index 07fb3b5..f4965d4 100644
--- a/api/openapi.yaml
+++ b/api/openapi.yaml
@@ -2,7 +2,7 @@ openapi: "3.0.3"
 info:
   title: TaskForge API
   description: A minimal Express task management API.
-  version: "1.0.0"
+  version: "2.0.0"
 paths:
   /api/tasks:
     get:
@@ -71,25 +71,6 @@ paths:
             application/json:
               schema:
                 $ref: "#/components/schemas/Error"
-    delete:
-      summary: Delete Task
-      description: Delete a task by ID.
-      operationId: deleteTask
-      parameters:
-        - name: taskId
-          in: path
-          required: true
-          schema:
-            type: integer
-      responses:
-        "204":
-          description: Task deleted
-        "404":
-          description: Task not found
-          content:
-            application/json:
-              schema:
-                $ref: "#/components/schemas/Error"
   /api/health:
     get:
       summary: Health Check
@@ -124,22 +105,29 @@ components:
         created_at:
           type: string
           format: date-time
-        assignee:
+        assigned_to:
           type: string
           nullable: true
     TaskCreate:
       type: object
       required:
         - title
+        - priority
       properties:
         title:
           type: string
         description:
           type: string
           nullable: true
-        assignee:
+        assigned_to:
           type: string
           nullable: true
+        priority:
+          type: string
+          enum:
+            - low
+            - medium
+            - high
     HealthResponse:
       type: object
       required:
@@ -149,7 +137,7 @@ components:
         status:
           type: string
         uptime:
-          type: integer
+          type: string
     Error:
       type: object
       properties:
diff --git a/app.js b/app.js
index 8046aa7..08021fb 100644
--- a/app.js
+++ b/app.js
@@ -17,19 +17,23 @@ app.get("/api/tasks", (req, res) => {
   res.json(result);
 });
 
-// Create task
+// Create task — now requires priority, uses assigned_to instead of assignee
 app.post("/api/tasks", (req, res) => {
-  const { title, description, assignee } = req.body;
+  const { title, description, assigned_to, priority } = req.body;
   if (!title) {
     return res.status(422).json({ detail: "title is required" });
   }
+  if (!priority) {
+    return res.status(422).json({ detail: "priority is required" });
+  }
   const task = {
     id: nextId++,
     title,
     description: description || null,
     status: "pending",
     created_at: new Date().toISOString(),
-    assignee: assignee || null,
+    assigned_to: assigned_to || null,
+    priority,
   };
   tasks.push(task);
   res.status(201).json(task);
@@ -44,21 +48,13 @@ app.get("/api/tasks/:id", (req, res) => {
   res.json(task);
 });
 
-// Delete task by ID
-app.delete("/api/tasks/:id", (req, res) => {
-  const index = tasks.findIndex((t) => t.id === parseInt(req.params.id));
-  if (index === -1) {
-    return res.status(404).json({ detail: "Task not found" });
-  }
-  tasks.splice(index, 1);
-  res.status(204).send();
-});
+// DELETE endpoint removed
 
-// Health check
+// Health check — uptime changed from number to string
 app.get("/api/health", (req, res) => {
   res.json({
     status: "healthy",
-    uptime: Math.floor(process.uptime()),
+    uptime: `${Math.floor(process.uptime())} seconds`,
   });
 });