diff --git a/dashboard/app.py b/dashboard/app.py
index c3fc121..46c2260 100644
--- a/dashboard/app.py
+++ b/dashboard/app.py
@@ -7,6 +7,10 @@ import pandas as pd
 from pathlib import Path
 import sys
 from datetime import datetime
+import time
+import os
+import json
+import signal
 
 # Add parent to path
 sys.path.insert(0, str(Path(__file__).parent.parent))