diff --git a/.changeset/honest-news-hunt.md b/.changeset/honest-news-hunt.md
new file mode 100644
index 000000000000..9ea73a1cb34f
--- /dev/null
+++ b/.changeset/honest-news-hunt.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-cloudflare': patch
+---
+
+fix: Copy .wasm files during build
diff --git a/packages/adapter-cloudflare/index.js b/packages/adapter-cloudflare/index.js
index 4baec66be4c0..f169539d1e77 100644
--- a/packages/adapter-cloudflare/index.js
+++ b/packages/adapter-cloudflare/index.js
@@ -54,7 +54,10 @@ export default function (options = {}) {
 				outfile: `${dest}/_worker.js`,
 				allowOverwrite: true,
 				format: 'esm',
-				bundle: true
+				bundle: true,
+				loader: {
+					'.wasm': 'copy'
+				}
 			});
 		}
 	};