diff --git a/apps/desktop/src/renderer/src/service/request.ts b/apps/desktop/src/renderer/src/service/request.ts
index ee4c27a3..0c44aeb2 100644
--- a/apps/desktop/src/renderer/src/service/request.ts
+++ b/apps/desktop/src/renderer/src/service/request.ts
@@ -1,7 +1,7 @@
 import { useAuthStore } from '../stores/auth'
 
 // Backend API host — change this when switching environments
-const API_HOST = 'https://api-dev.copilothub.ai'
+const API_HOST = 'https://api.multica.ai'
 
 /**
  * Fetch request wrapper for desktop app.
diff --git a/apps/web/next.config.ts b/apps/web/next.config.ts
index dfa5bd7f..9fbe55e8 100644
--- a/apps/web/next.config.ts
+++ b/apps/web/next.config.ts
@@ -5,7 +5,7 @@ const nextConfig: NextConfig = {
   rewrites: async () => [
     {
       source: "/api/:path*",
-      destination: `${process.env.API_URL || "https://api-dev.copilothub.ai"}/api/:path*`,
+      destination: `${process.env.API_URL || "https://api.multica.ai"}/api/:path*`,
     },
   ],
   headers: async () => [
diff --git a/packages/core/src/hub/api-client.ts b/packages/core/src/hub/api-client.ts
index 273ec258..7b54cf07 100644
--- a/packages/core/src/hub/api-client.ts
+++ b/packages/core/src/hub/api-client.ts
@@ -1,6 +1,6 @@
 import { getLocalAuth } from "./auth-store.js";
 
-export const API_BASE_URL = "https://api-dev.copilothub.ai";
+export const API_BASE_URL = "https://api.multica.ai";
 
 /**
  * Return auth headers for the proxy API.