diff --git a/.changeset/five-rules-call.md b/.changeset/five-rules-call.md
new file mode 100644
index 000000000..3e3134ee0
--- /dev/null
+++ b/.changeset/five-rules-call.md
@@ -0,0 +1,5 @@
+---
+'@cloudflare/next-on-pages': patch
+---
+
+Fix `process.env` not being enumerable due to being a proxy.
diff --git a/packages/next-on-pages/src/buildApplication/generateGlobalJs.ts b/packages/next-on-pages/src/buildApplication/generateGlobalJs.ts
index f4c033fc0..7d28cdead 100644
--- a/packages/next-on-pages/src/buildApplication/generateGlobalJs.ts
+++ b/packages/next-on-pages/src/buildApplication/generateGlobalJs.ts
@@ -20,6 +20,9 @@ export function generateGlobalJs(): string {
 				env: new Proxy(
 					{},
 					{
+						ownKeys: () => Reflect.ownKeys(envAsyncLocalStorage.getStore()),
+						getOwnPropertyDescriptor: (_, ...args) =>
+							Reflect.getOwnPropertyDescriptor(envAsyncLocalStorage.getStore(), ...args),
 						get: (_, property) => Reflect.get(envAsyncLocalStorage.getStore(), property),
 						set: (_, property, value) => Reflect.set(envAsyncLocalStorage.getStore(), property, value),
 				}),