diff --git a/app/src/main/java/eu/kanade/domain/chapter/model/Chapter.kt b/app/src/main/java/eu/kanade/domain/chapter/model/Chapter.kt
index 32d2381b1..28da13e37 100644
--- a/app/src/main/java/eu/kanade/domain/chapter/model/Chapter.kt
+++ b/app/src/main/java/eu/kanade/domain/chapter/model/Chapter.kt
@@ -13,6 +13,7 @@ fun Chapter.toSChapter(): SChapter {
         it.date_upload = dateUpload
         it.chapter_number = chapterNumber.toFloat()
         it.scanlator = scanlator
+        it.memo = memo
     }
 }
 
@@ -23,6 +24,7 @@ fun Chapter.copyFromSChapter(sChapter: SChapter): Chapter {
         dateUpload = sChapter.date_upload,
         chapterNumber = sChapter.chapter_number.toDouble(),
         scanlator = sChapter.scanlator?.ifBlank { null }?.trim(),
+        memo = sChapter.memo,
     )
 }
 
@@ -39,4 +41,5 @@ fun Chapter.toDbChapter(): DbChapter = ChapterImpl().also {
     it.date_upload = dateUpload
     it.chapter_number = chapterNumber.toFloat()
     it.source_order = sourceOrder.toInt()
+    it.memo = memo
 }
diff --git a/app/src/main/java/eu/kanade/domain/manga/model/Manga.kt b/app/src/main/java/eu/kanade/domain/manga/model/Manga.kt
index 2109d5191..ececb06d8 100644
--- a/app/src/main/java/eu/kanade/domain/manga/model/Manga.kt
+++ b/app/src/main/java/eu/kanade/domain/manga/model/Manga.kt
@@ -45,6 +45,7 @@ fun Manga.toSManga(): SManga = SManga.create().also {
     it.status = status.toInt()
     it.thumbnail_url = thumbnailUrl
     it.initialized = initialized
+    it.memo = memo
 }
 
 fun Manga.copyFrom(other: SManga): Manga {
@@ -66,6 +67,7 @@ fun Manga.copyFrom(other: SManga): Manga {
         status = other.status.toLong(),
         updateStrategy = other.update_strategy,
         initialized = other.initialized && initialized,
+        memo = other.memo,
     )
 }
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/database/models/ChapterImpl.kt b/app/src/main/java/eu/kanade/tachiyomi/data/database/models/ChapterImpl.kt
index 2672d0887..57edc71d6 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/database/models/ChapterImpl.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/database/models/ChapterImpl.kt
@@ -3,6 +3,7 @@
 package eu.kanade.tachiyomi.data.database.models
 
 import kotlinx.serialization.json.JsonObject
+import mihon.core.common.extensions.EMPTY
 
 class ChapterImpl : Chapter {
 
@@ -34,7 +35,7 @@ class ChapterImpl : Chapter {
 
     override var version: Long = 0
 
-    override var memo: JsonObject = JsonObject(emptyMap())
+    override var memo: JsonObject = JsonObject.EMPTY
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
diff --git a/domain/src/main/java/mihon/domain/manga/model/SManga.kt b/domain/src/main/java/mihon/domain/manga/model/SManga.kt
index 033f313d0..49746b72f 100644
--- a/domain/src/main/java/mihon/domain/manga/model/SManga.kt
+++ b/domain/src/main/java/mihon/domain/manga/model/SManga.kt
@@ -15,6 +15,7 @@ fun SManga.toDomainManga(sourceId: Long): Manga {
         thumbnailUrl = thumbnail_url,
         updateStrategy = update_strategy,
         initialized = initialized,
+        memo = memo,
         source = sourceId,
     )
 }
diff --git a/domain/src/main/java/tachiyomi/domain/chapter/interactor/ShouldUpdateDbChapter.kt b/domain/src/main/java/tachiyomi/domain/chapter/interactor/ShouldUpdateDbChapter.kt
index 56497a5fc..4e4179dec 100644
--- a/domain/src/main/java/tachiyomi/domain/chapter/interactor/ShouldUpdateDbChapter.kt
+++ b/domain/src/main/java/tachiyomi/domain/chapter/interactor/ShouldUpdateDbChapter.kt
@@ -9,6 +9,7 @@ class ShouldUpdateDbChapter {
             dbChapter.name != sourceChapter.name ||
             dbChapter.dateUpload != sourceChapter.dateUpload ||
             dbChapter.chapterNumber != sourceChapter.chapterNumber ||
-            dbChapter.sourceOrder != sourceChapter.sourceOrder
+            dbChapter.sourceOrder != sourceChapter.sourceOrder ||
+            dbChapter.memo != sourceChapter.memo
     }
 }
diff --git a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapter.kt b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapter.kt
index 9ed836af6..9fd3d6175 100644
--- a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapter.kt
+++ b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapter.kt
@@ -36,6 +36,7 @@ interface SChapter : Serializable {
         date_upload = other.date_upload
         chapter_number = other.chapter_number
         scanlator = other.scanlator
+        memo = other.memo
     }
 
     companion object {
diff --git a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapterImpl.kt b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapterImpl.kt
index 597271997..2ee6d7d23 100644
--- a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapterImpl.kt
+++ b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SChapterImpl.kt
@@ -3,6 +3,7 @@
 package eu.kanade.tachiyomi.source.model
 
 import kotlinx.serialization.json.JsonObject
+import mihon.core.common.extensions.EMPTY
 
 class SChapterImpl : SChapter {
 
@@ -16,5 +17,5 @@ class SChapterImpl : SChapter {
 
     override var date_upload: Long = 0
 
-    override var memo: JsonObject = JsonObject(emptyMap())
+    override var memo: JsonObject = JsonObject.EMPTY
 }
diff --git a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SManga.kt b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SManga.kt
index 2f0c8852c..983c16c18 100644
--- a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SManga.kt
+++ b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SManga.kt
@@ -56,6 +56,7 @@ interface SManga : Serializable {
         it.thumbnail_url = thumbnail_url
         it.update_strategy = update_strategy
         it.initialized = initialized
+        it.memo = memo
     }
 
     companion object {
diff --git a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SMangaImpl.kt b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SMangaImpl.kt
index 248cf6163..c3fcbf99a 100644
--- a/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SMangaImpl.kt
+++ b/source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/model/SMangaImpl.kt
@@ -3,6 +3,7 @@
 package eu.kanade.tachiyomi.source.model
 
 import kotlinx.serialization.json.JsonObject
+import mihon.core.common.extensions.EMPTY
 
 class SMangaImpl : SManga {
 
@@ -26,5 +27,5 @@ class SMangaImpl : SManga {
 
     override var initialized: Boolean = false
 
-    override var memo: JsonObject = JsonObject(emptyMap())
+    override var memo: JsonObject = JsonObject.EMPTY
 }