diff --git a/assets/index.html b/assets/index.html
index bd90807..02eda83 100644
--- a/assets/index.html
+++ b/assets/index.html
@@ -8,7 +8,7 @@
     <link rel="stylesheet" href="xterm.css">
     <link rel="stylesheet" href="normalize.css">
     <link rel="stylesheet" href="style.css">
-    <script src="https://puter.com/puter.js/v2"></script>
+    <script src="__SDK_URL__"></script>
     <script src="config.js"></script>
     <script src="bundle.js"></script>
     <script>
diff --git a/config/dev.js b/config/dev.js
index 01a26cb..01886c8 100644
--- a/config/dev.js
+++ b/config/dev.js
@@ -18,5 +18,6 @@
  */
 globalThis.__CONFIG__ = {
     "origin": "https://puter.local:8080",
-    "shell.href": "https://puter.local:8081"
+    "shell.href": "https://puter.local:8081",
+    "sdk_url": "http://puter.localhost:4100/sdk/puter.js",
 };
diff --git a/config/release.js b/config/release.js
index 7eb24db..45e3cbc 100644
--- a/config/release.js
+++ b/config/release.js
@@ -18,5 +18,6 @@
  */
 globalThis.__CONFIG__ = {
     origin: location.origin,
-    'shell.href': location.origin + '/puter-shell/'
+    'shell.href': location.origin + '/puter-shell/',
+    sdk_url: 'https://puter.com/puter.js/v2',
 };
diff --git a/rollup.config.js b/rollup.config.js
index 447fb9e..3704356 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -21,6 +21,7 @@ import commonjs from '@rollup/plugin-commonjs';
 import copy from 'rollup-plugin-copy';
 
 const configFile = process.env.CONFIG_FILE ?? 'config/dev.js';
+await import(`./${configFile}`);
 
 export default {
     input: "src/main_puter.js",
@@ -33,7 +34,13 @@ export default {
         commonjs(),
         copy({
             targets: [
-                { src: 'assets/index.html', dest: 'dist' },
+                {
+                    src: 'assets/index.html',
+                    dest: 'dist',
+                    transform: (contents, name) => {
+                        return contents.toString().replace('__SDK_URL__', globalThis.__CONFIG__.sdk_url);
+                    }
+                },
                 { src: 'assets/shell.html', dest: 'dist' },
                 { src: 'assets/normalize.css', dest: 'dist' },
                 { src: 'assets/style.css', dest: 'dist' },