diff --git a/releases/release-5.0.1.md b/releases/release-5.0.1.md
index 8983850963179..7af35f73a872f 100644
--- a/releases/release-5.0.1.md
+++ b/releases/release-5.0.1.md
@@ -8,6 +8,10 @@ Release date: April 24, 2021
 
 TiDB version: 5.0.1
 
+## Compatibility change
+
+- The default value of the [`committer-concurrency`](/tidb-configuration-file.md#committer-concurrency) configuration item is changed from `16` to `128`.
+
 ## Improvements
 
 + TiDB