diff --git a/.changeset/orange-zebras-sell.md b/.changeset/orange-zebras-sell.md
new file mode 100644
index 00000000..9a0d5db8
--- /dev/null
+++ b/.changeset/orange-zebras-sell.md
@@ -0,0 +1,5 @@
+---
+'@watching/cli': patch
+---
+
+Fix development server
diff --git a/app/package.json b/app/package.json
index b6bc0384..94a03cdc 100644
--- a/app/package.json
+++ b/app/package.json
@@ -26,7 +26,7 @@
   "devDependencies": {
     "@lemon/css": "workspace:*",
     "@lemon/zest": "workspace:*",
-    "@lemonmade/graphql-live": "^0.4.1",
+    "@lemonmade/graphql-live": "^0.4.2",
     "@lemonmade/remote-ui": "^0.3.3",
     "@lemonmade/remote-ui-preact": "^0.4.1",
     "@lemonmade/remote-ui-react": "^0.3.1",
diff --git a/packages/cli/package.json b/packages/cli/package.json
index f12cdab1..1c9c2f0b 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -46,7 +46,7 @@
     "build": "rollup --config configuration/rollup.config.js"
   },
   "dependencies": {
-    "@lemonmade/graphql-live": "^0.4.1",
+    "@lemonmade/graphql-live": "^0.4.2",
     "@quilted/cli-kit": "^0.1.12",
     "@quilted/graphql": "^3.0.1",
     "@quilted/graphql-tools": "^0.2.0",
diff --git a/packages/cli/source/commands/develop/develop.ts b/packages/cli/source/commands/develop/develop.ts
index f9417406..304d6240 100644
--- a/packages/cli/source/commands/develop/develop.ts
+++ b/packages/cli/source/commands/develop/develop.ts
@@ -4,6 +4,8 @@ import * as path from 'path';
 import type {Server} from 'http';
 import {emitKeypressEvents} from 'readline';
 import {stat, readFile} from 'fs/promises';
+import {setMaxListeners} from 'events';
+
 import {
   on,
   EventEmitter,
@@ -75,6 +77,10 @@ export async function develop({ui, proxy}: {ui: Ui; proxy?: string}) {
 
   await ensureRootOutputDirectory(app);
   const devServer = await createDevServer(app, {ui});
+
+  // The development server adds lots of event listeners to abort controllers,
+  // which causes unnecessary warnings in Node.
+  setMaxListeners(Number.POSITIVE_INFINITY);
   const result = await devServer.listen();
 
   const localUrl = new URL(proxy ?? `http://localhost:${result.port}`);
@@ -313,8 +319,9 @@ async function createDevServer(app: LocalApp, {ui}: {ui: Ui}) {
           return new Response(await readFile(assetPath, {encoding: 'utf8'}), {
             headers: {
               'Cache-Control': 'no-store',
-              'Timing-Allow-Origin': '*',
               'Content-Type': mime.getType(assetPath)!,
+              'Timing-Allow-Origin': '*',
+              'Access-Control-Allow-Origin': '*',
             },
           });
         } else {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 63fc3ee7..07918df2 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -145,8 +145,8 @@ importers:
         specifier: workspace:*
         version: link:../packages/zest
       '@lemonmade/graphql-live':
-        specifier: ^0.4.1
-        version: 0.4.1(graphql@16.8.1)
+        specifier: ^0.4.2
+        version: 0.4.2(graphql@16.8.1)
       '@lemonmade/remote-ui':
         specifier: ^0.3.3
         version: 0.3.3(@preact/signals-core@1.5.0)(preact@10.19.2)
@@ -335,8 +335,8 @@ importers:
   packages/cli:
     dependencies:
       '@lemonmade/graphql-live':
-        specifier: ^0.4.1
-        version: 0.4.1(graphql@16.8.1)
+        specifier: ^0.4.2
+        version: 0.4.2(graphql@16.8.1)
       '@quilted/cli-kit':
         specifier: ^0.1.12
         version: 0.1.12
@@ -3666,8 +3666,8 @@ packages:
       '@jridgewell/resolve-uri': 3.1.1
       '@jridgewell/sourcemap-codec': 1.4.15
 
-  /@lemonmade/graphql-live@0.4.1(graphql@16.8.1):
-    resolution: {integrity: sha512-N4n+ezyBhOCeIhejwi/rQEFTKmN1JOXy6UHPrFBgSqV/jRmvSs9KTmukOFUi9B2AFYbO9alU7YoctV7ycjtYXg==}
+  /@lemonmade/graphql-live@0.4.2(graphql@16.8.1):
+    resolution: {integrity: sha512-wIGOQkXF510AT87G6aW1OtMVR3wDMTMtZhoY0MINajljyOHfvij8qeJWfkJ42974N7WPZDOFqXy2YKEfdbo0YQ==}
     engines: {node: '>=14.0.0'}
     peerDependencies:
       graphql: ^16.0.0