Update app.py

app.py

@@ -11,7 +11,7 @@ def install_packages():
         "streamlit"
     ]
     for package in required_packages:
-        subprocess.check_call([sys.executable, "-m", "pip", "install", package])
+        subprocess.check_call([sys.executable, "-m", "pip", "install", "-U", package])
 
 # Run package installation
 install_packages()