diff --git a/CHANGES.md b/CHANGES.md
index 87eacf12a5..0fbb14f7ff 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -16,6 +16,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
   the version accordingly. ([#1804](https://github.com/diffplug/spotless/issues/1804)).
 * Support for `google-java-format`'s `skip-javadoc-formatting` option. ([#1793](https://github.com/diffplug/spotless/pull/1793))
 * Support configuration of mirrors for P2 repositories in maven DSL ([#1697](https://github.com/diffplug/spotless/issues/1697)).
+* New line endings mode `GIT_ATTRIBUTES_FAST_ALLSAME`. ([#1838](https://github.com/diffplug/spotless/pull/1838))
 ### Fixed
 * Fix support for plugins when using Prettier version `3.0.0` and newer. ([#1802](https://github.com/diffplug/spotless/pull/1802))
 * Fix configuration cache issue around `external process started '/usr/bin/git --version'`. ([#1806](https://github.com/diffplug/spotless/issues/1806))
diff --git a/plugin-gradle/CHANGES.md b/plugin-gradle/CHANGES.md
index 7a92efc514..536747a4ff 100644
--- a/plugin-gradle/CHANGES.md
+++ b/plugin-gradle/CHANGES.md
@@ -13,6 +13,9 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 * Fixed support for plugins when using Prettier version `3.0.0` and newer. ([#1802](https://github.com/diffplug/spotless/pull/1802))
 ### Changes
 * Bump default `ktlint` version to latest `0.50.0` -> `1.0.0`. ([#1808](https://github.com/diffplug/spotless/pull/1808))
+* **POSSIBLY BREAKING** the default line endings are now `GIT_ATTRIBUTES_FAST_ALLSAME` instead of `GIT_ATTRIBUTES`. ([#1838](https://github.com/diffplug/spotless/pull/1838))
+  * If all the files within a format have the same line endings, then there is no change in behavior.
+  * Fixes large performance regression. ([#1527](https://github.com/diffplug/spotless/issues/1527))
 
 ## [6.21.0] - 2023-08-29
 ### Added
diff --git a/plugin-maven/CHANGES.md b/plugin-maven/CHANGES.md
index 1338d42ddb..a6c98e2c96 100644
--- a/plugin-maven/CHANGES.md
+++ b/plugin-maven/CHANGES.md
@@ -28,6 +28,9 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ### Changes
 * Bump default `flexmark` version to latest `0.64.0` -> `0.64.8`. ([#1801](https://github.com/diffplug/spotless/pull/1801))
 * Bump default `ktlint` version to latest `0.50.0` -> `1.0.0`. ([#1808](https://github.com/diffplug/spotless/pull/1808))
+* **POSSIBLY BREAKING** the default line endings are now `GIT_ATTRIBUTES_FAST_ALLSAME` instead of `GIT_ATTRIBUTES`. ([#1838](https://github.com/diffplug/spotless/pull/1838))
+  * If all the files within a format have the same line endings, then there is no change in behavior.
+  * Fixes large performance regression. ([#1527](https://github.com/diffplug/spotless/issues/1527))
 
 ## [2.39.0] - 2023-08-29
 ### Added