# Spring Boot 4.1.0 + Tomcat 11.0.x — Software interface version compatibility

For Spring Boot 4.1.0 + Tomcat 11.0.x, product is Spring Boot; software version is 4.1.0; dependency version is Tomcat 11.0.x; companion package versions is Servlet 6.1, recorded from its source on 2026-08-04.

- **Product:** Spring Boot _(unconfirmed — we could not tie this to the quote below)_
- **Version pairing:** Spring Boot 4.1.0 + Tomcat 11.0.x _(unconfirmed — we could not tie this to the quote below)_
- **Software version:** 4.1.0 _(unconfirmed — we could not tie this to the quote below)_
- **Dependency version:** Tomcat 11.0.x
- **Companion package versions:** Servlet 6.1 _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Tomcat 11.0.x | 6.1 |

## Source

- https://docs.spring.io/spring-boot/system-requirements.html

Last verified: 2026-08-04. Review by: 2026-10-03.
Part of [Software interface version compatibility](https://referencesource.org/software-interface-version-compatibility/).