diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29f9ab7cf..5fff64dbb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 - Fix crash trying to select text in notes screen ([@AntsyLich](https://github.com/AntsyLich)) ([#3516](https://github.com/mihonapp/mihon/pull/3516))
 - Fix crash when putting app in background ([@AntsyLich](https://github.com/AntsyLich)) ([#3523](https://github.com/mihonapp/mihon/pull/3523))
 - Fix support for non-system SAF providers ([@AntsyLich](https://github.com/AntsyLich)) ([#3530](https://github.com/mihonapp/mihon/pull/3530))
+- Fix chapter's `memo` field not being updated for existing chapters ([@cuong-tran](https://github.com/cuong-tran)) ([#3538](https://github.com/mihonapp/mihon/pull/3538))
 
 ## [v0.20.0] - 2026-06-27
 ### Added
diff --git a/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt b/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt
index 5752ba1e9..fdf31cf77 100644
--- a/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt
+++ b/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt
@@ -129,6 +129,7 @@ class SyncChaptersWithSource(
                         chapterNumber = chapter.chapterNumber,
                         scanlator = chapter.scanlator,
                         sourceOrder = chapter.sourceOrder,
+                        memo = chapter.memo,
                     )
 
                     if (chapter.dateUpload != 0L) {