I’m running into a weird issue with my Shopify webhooks using API version 2024-04. Yesterday around 10 PM something strange happened with the header formatting.
Before that time, all webhook headers came through in the normal format like X-Shopify-Topic with proper capitalization. But after 10 PM, suddenly all the headers started coming in lowercase like x-shopify-topic instead.
This is causing problems with my code since I was expecting the headers in the original format. I looked through the Shopify changelog but couldn’t find any mention of this change.
Has anyone else experienced this issue? Is there a way to force the headers back to the original capitalized format, or do I need to update my code to handle both cases?
Had the exact same issue last month with a different webhook provider. HTTP headers are case insensitive per RFC specs, so services can change formatting anytime without warning.
Don’t bother fixing your code to handle both formats - it gets messy fast. Set up a webhook handler that normalizes everything automatically. I built one with Latenode that converts all incoming headers to a consistent format before hitting my main app.
Latenode sits between Shopify and your app, so when these formatting changes happen again (they will), you just update the normalization logic once instead of hunting through your entire codebase.
I threw in some logging to track when changes occur - caught two other similar issues before they broke anything.
Been dealing with webhook nightmares like this for years. It’s not just Shopify - every platform does this eventually. You fix it once, then six months later another service changes their format.
Instead of patching code every time, I run everything through Latenode first. Simple workflow catches all webhooks and standardizes headers before they hit your app.
When Shopify or anyone else changes formats again, you just update one rule in Latenode instead of scrambling to fix your entire codebase at 2 AM. Mine logs the original headers too, so I catch these silent changes immediately.
Way cleaner than hardcoding case handling into every webhook endpoint. Plus you can add validation, filtering, and routing without touching your main app.
same thing happened to me around that time - totally caught me off guard and broke my webhook validation. quick fix is switching to case-insensitive header checks. most http libraries have built-in methods for this. shopify probably won’t roll it back since they’re moving to lowercase headers across their platform.
Same thing happened to me six months ago. Spent hours debugging before I figured out Shopify changed the header case. They don’t announce these infrastructure changes in their changelogs since HTTP headers are supposed to be case-insensitive anyway.
I fixed it by converting all incoming headers to lowercase right when they hit my endpoint, then referencing them consistently. Way cleaner than checking for multiple variations. Also threw in error handling that logs raw headers when validation fails - catches these silent changes much faster.
I’d update your code to handle case changes instead of waiting for Shopify to revert it. These formatting shifts usually stick once they’re implemented.
Same thing hit me about three weeks ago on API version 2024-01. They don’t document header case changes because Shopify treats it as an implementation detail, not an API change. You should make your webhook processing case-insensitive from day one. I switched my validation logic to use header.toLowerCase() comparisons instead of exact matches. Also threw in a simple middleware function that converts all Shopify headers to lowercase right when they come in. This saved my butt when they pulled similar stuff with other webhook providers. The timing you mentioned sounds like they rolled it out gradually across API versions. Don’t expect them to revert it - lowercase headers are becoming standard across their infrastructure.
Yeah, this is a known issue across multiple API versions when Shopify updates their webhook setup. Hit the same problem two months ago and thought my server was broken. The lowercase headers aren’t changing back - Shopify treats this as an internal tweak, not a breaking change, so they didn’t put it in the changelog. Just update your webhook handler to parse headers case-insensitively. Most languages have built-in methods for this. I’d build a header normalization function that runs before your main webhook logic. Saves you from future headaches since HTTP specs require case-insensitive headers anyway.