diff --git a/.changeset/orange-windows-battle.md b/.changeset/orange-windows-battle.md
new file mode 100644
index 000000000000..37fcb28fabc0
--- /dev/null
+++ b/.changeset/orange-windows-battle.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/cloudflare': minor
+---
+
+Change build target from `es2020` to `es2022`, for better support
diff --git a/packages/integrations/cloudflare/src/index.ts b/packages/integrations/cloudflare/src/index.ts
index 12ff00a54b04..e0f055612c0e 100644
--- a/packages/integrations/cloudflare/src/index.ts
+++ b/packages/integrations/cloudflare/src/index.ts
@@ -232,7 +232,7 @@ export default function createIntegration(args?: Options): AstroIntegration {
 							fileURLToPath(assetsUrl)
 						);
 						await esbuild.build({
-							target: 'es2020',
+							target: 'es2022',
 							platform: 'browser',
 							conditions: ['workerd', 'worker', 'browser'],
 							external: [
@@ -313,7 +313,7 @@ export default function createIntegration(args?: Options): AstroIntegration {
 					const finalBuildUrl = pathToFileURL(buildPath.replace(/\.mjs$/, '.js'));
 
 					await esbuild.build({
-						target: 'es2020',
+						target: 'es2022',
 						platform: 'browser',
 						conditions: ['workerd', 'worker', 'browser'],
 						external: [