diff --git a/.changeset/slow-radios-smoke.md b/.changeset/slow-radios-smoke.md
new file mode 100644
index 00000000..15b8c107
--- /dev/null
+++ b/.changeset/slow-radios-smoke.md
@@ -0,0 +1,5 @@
+---
+"@opennextjs/cloudflare": minor
+---
+
+add option to generate sourcemap for handler.mjs
diff --git a/packages/cloudflare/src/api/config.ts b/packages/cloudflare/src/api/config.ts
index 7469375c..5e9b3dd7 100644
--- a/packages/cloudflare/src/api/config.ts
+++ b/packages/cloudflare/src/api/config.ts
@@ -90,6 +90,7 @@ export function defineCloudflareConfig(config: CloudflareOverrides = {}): OpenNe
 		edgeExternals: ["node:crypto"],
 		cloudflare: {
 			useWorkerdCondition: true,
+			sourcemap: false,
 		},
 		dangerous: {
 			enableCacheInterception,
@@ -154,6 +155,14 @@ interface OpenNextConfig extends AwsOpenNextConfig {
 		 */
 		useWorkerdCondition?: boolean;
 
+		/**
+		 * Whether to genereate a sourcemap for the bundled server.
+		 *
+		 *
+		 * @default false
+		 */
+		sourcemap?: boolean;
+
 		/**
 		 * Disable throwing an error when the config validation fails.
 		 * This is useful for overriding some of the default provided by cloudflare.
diff --git a/packages/cloudflare/src/cli/build/bundle-server.ts b/packages/cloudflare/src/cli/build/bundle-server.ts
index cd08a9e6..d891b50b 100644
--- a/packages/cloudflare/src/cli/build/bundle-server.ts
+++ b/packages/cloudflare/src/cli/build/bundle-server.ts
@@ -81,6 +81,7 @@ export async function bundleServer(buildOpts: BuildOptions): Promise<void> {
 		minifySyntax: !debug,
 		legalComments: "none",
 		metafile: true,
+		sourcemap: getOpenNextConfig(buildOpts).cloudflare?.sourcemap,
 		// Next traces files using the default conditions from `nft` (`node`, `require`, `import` and `default`)
 		//
 		// Because we use the `node` platform for this build, the "module" condition is used when no conditions are defined.