Your Google Tag configuration will soon no longer be supported

I’m using the GTM integration for Consent Mode v2 (with GTM id in 1 site and GA4 id in the other 2). Then I have

<script>gtag('consent', 'update', { 'ad_storage': 'granted', 'analytics_storage': 'granted'});</script>

in analytics category head on accept.

Just got an email from Google for these sites:

We noticed that some or all of your website pages deploy Google tag GT-xxxxxxxx, G-xxxxxxxxxx, G-xxxxxxxxxx via a Google Tag Manager snippet (gtm.js). This configuration will soon no longer be supported.

What’s changing?

To ensure consistency across all websites using the Google tag, we are standardizing our tagging snippet behavior. Starting on October 02, 2026, all gtm.js snippets will initialize on container load, regardless of any gtag(‘config’) commands.
To continue using the gtag configuration code, you must ensure all pages on your site use the gtag/js code snippet.

Next steps
If you don’t take any action, this update may alter how your tags behave. Please update your tag deployment to use gtag/js instead of gtm.js, by following these instructions.