diff --git a/src/presets/cloudflare.ts b/src/presets/cloudflare.ts
index 939c542c..ff5b4443 100644
--- a/src/presets/cloudflare.ts
+++ b/src/presets/cloudflare.ts
@@ -24,7 +24,6 @@ const cloudflareNodeCompatModules = [
   "string_decoder",
   "url",
   "util/types",
-  "sys",
   "zlib",
 ];
 
@@ -49,6 +48,11 @@ const cloudflarePreset: Preset = {
       ]),
     ),
 
+    // The `node:sys` module is just a deprecated alias for `node:util`
+    // Keep this until util is a full compat module.
+    sys: "unenv/runtime/node/util/$cloudflare",
+    "node:sys": "unenv/runtime/node/util/$cloudflare",
+
     // define aliases for hybrid modules
     ...Object.fromEntries(
       hybridNodeCompatModules.flatMap((m) => [