diff --git a/ABI_BREAKS.md b/ABI_BREAKS.md
index ebf9fa5e33..ca5f0ada56 100644
--- a/ABI_BREAKS.md
+++ b/ABI_BREAKS.md
@@ -8,3 +8,4 @@ This document lists the ABI breaks that were made in each mlibc major version.
 - [#511](https://github.com/managarm/mlibc/pull/511): Musl's regex engine was added, implementing `regcomp` and `regexec`. This required some changes to the `regex_t` struct.
 - [#504](https://github.com/managarm/mlibc/pull/504), [#580](https://github.com/managarm/mlibc/pull/580): In both the mlibc and Linux ABIs, a `domainname` member was added to `struct utsname`, which is a glibc extension.
 - [#311](https://github.com/managarm/mlibc/pull/311): Added all necessary fields in `pthread_attr_t` required for implementing all `pthread_attr` functions.
+- [#652](https://github.com/managarm/mlibc/pull/652): The ABI of `struct statfs` and `struct statvfs` was changed to match Linux. `socklen_t` was also changed from `unsigned long` to `unsigned int`.