---
number: 27349
slug: 27349-edge-functions-are-now-deno-1-43-compatible
published: 2024-06-18
discussion: https://github.com/orgs/supabase/discussions/27349
labels:
  - edge functions
page: https://supabase.com/changelog/27349-edge-functions-are-now-deno-1-43-compatible
---

# Edge Functions are now Deno 1.43 compatible

Supabase [Edge Runtime version 1.54 ](https://github.com/supabase/edge-runtime/releases/tag/v1.54.0) is compatible with Deno 1.43.

Supabase's hosted platform was upgraded to use this release when serving Edge Functions starting today.

If you're using Supabase CLI for local development [latest stable release 1.176.10](https://github.com/supabase/cli/releases/tag/v1.176.10), it adds compatibility for Deno 1.43.

### How do I find which version of Edge Runtime I'm running?

### Supabase CLI (local)

When you run `supabase functions serve`, it should show the current version of Edge Runtime used (and its Deno compatibility)

```
> supabase functions serve

Setting up Edge Functions runtime...
Serving functions on http://127.0.0.1:54321/functions/v1/<function-name>
Using supabase-edge-runtime-1.54.2 (compatible with Deno v1.43.0)
```

### Hosted Platform

You can check the `served_by` field in log events to see which Edge Runtime version was used to serve your function
.
![Screenshot 2024-06-18 at 7 44 47 PM](https://github.com/supabase/supabase/assets/5358/7dbfe2f2-6f8b-4ae8-b19c-7d01ef5c8adc)


We try our best to maintain backward compatibility in these upgrades. If you're experiencing any issues, please feel free to make a [support request](https://supabase.help)