When is Svelte 4 end of life?

Svelte 4 reached end of life on Oct 19, 2024. It gets no more updates, including security fixes.

What is the latest version of Svelte 4?

The latest Svelte 4 release is 4.2.20, released on May 20, 2025.

Svelte 4 was released on Jun 22, 2023.

Run npm list svelte, then paste the result into the “Am I up to date?” box on this page.

End of life

4.2.20 Release notes ↗

Svelte 4 reached end of life on Oct 19, 2024 (1 year ago). It no longer gets updates, including security fixes. Upgrade to Svelte 5 (latest 5.57.2).

The recommended upgrade is Svelte 5, currently at 5.57.2.

Is Svelte 4 still supported?: No. Svelte 4 reached end of life on Oct 19, 2024 (1 year ago). It no longer gets updates, including security fixes. Upgrade to Svelte 5 (latest 5.57.2).
When is Svelte 4 end of life?: Svelte 4 reached end of life on Oct 19, 2024. It gets no more updates, including security fixes.
What is the latest version of Svelte 4?: The latest Svelte 4 release is 4.2.20, released on May 20, 2025.
When was Svelte 4 released?: Svelte 4 was released on Jun 22, 2023.
What should I upgrade Svelte 4 to?: The recommended upgrade is Svelte 5, currently at 5.57.2.
How do I check which Svelte version I have?: Run npm list svelte, then paste the result into the “Am I up to date?” box on this page.

The history fills in as new versions come out.

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