diff --git a/SulTee/SulTee/SensorManager.swift b/SulTee/SulTee/SensorManager.swift
index 20481f3..af9f6ea 100644
--- a/SulTee/SulTee/SensorManager.swift
+++ b/SulTee/SulTee/SensorManager.swift
@@ -132,6 +132,11 @@ final class SensorManager: NSObject, ObservableObject {
     // MARK: - Init
 
     override init() {
+        // Migrate: if the stored URL is the old Tailscale IP, replace with the new WSS endpoint.
+        if let saved = UserDefaults.standard.string(forKey: Self.orinURLKey),
+           saved.contains("100.64.0.2") {
+            UserDefaults.standard.removeObject(forKey: Self.orinURLKey)
+        }
         let urlStr = UserDefaults.standard.string(forKey: Self.orinURLKey) ?? Self.defaultOrinURL
         self.ws = WebSocketClient(url: URL(string: urlStr) ?? URL(string: Self.defaultOrinURL)!)
         super.init()