diff --git a/packages/lookit-initjspsych/rollup.config.dev.mjs b/packages/lookit-initjspsych/rollup.config.dev.mjs
index 70dbcdde..ec1d7c4a 100644
--- a/packages/lookit-initjspsych/rollup.config.dev.mjs
+++ b/packages/lookit-initjspsych/rollup.config.dev.mjs
@@ -1,26 +1,29 @@
 import { makeRollupConfig } from "@jspsych/config/rollup";
-import serve from 'rollup-plugin-serve';
+import serve from "rollup-plugin-serve";
 
 let rollupConfig = makeRollupConfig("lookitInitJsPsych");
 
-const host = 'localhost';
+const host = "localhost";
 const port = 10001; // this needs to change for each package
-const content_dir = 'dist/';
+const content_dir = "dist/";
 
 rollupConfig.plugins = [
-    // options: https://github.com/thgh/rollup-plugin-serve/tree/master?tab=readme-ov-file#options
-    serve({
-        contentBase: content_dir,
-        historyApiFallback: true,
-        host: host,
-        port: port,
-        onListening: function (server) {
-            const address = server.address();
-            const host = (address.address === '::' || address.address === '::1') ? 'localhost' : address.address;
-            const protocol = this.https ? 'https' : 'http';
-            console.log(`Server listening at ${protocol}://${host}:${address.port}/`);
-        }
-    })
+  // options: https://github.com/thgh/rollup-plugin-serve/tree/master?tab=readme-ov-file#options
+  serve({
+    contentBase: content_dir,
+    historyApiFallback: true,
+    host: host,
+    port: port,
+    onListening: function (server) {
+      const address = server.address();
+      const host =
+        address.address === "::" || address.address === "::1"
+          ? "localhost"
+          : address.address;
+      const protocol = this.https ? "https" : "http";
+      console.log(`Server listening at ${protocol}://${host}:${address.port}/`);
+    },
+  }),
 ];
 
 export default rollupConfig;