diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8bda44230..a2c370aa4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed playtime regression across sessions: `updateSaveDataWithStruct` now writes the accumulated playtime back into the binary save blob, preventing each reconnect from loading a stale in-game counter and rolling back progress.
+
 ## [9.3.1] - 2026-03-23
 
 ### Added
diff --git a/server/channelserver/model_character.go b/server/channelserver/model_character.go
index ca7c7e91c..488c6fbf5 100644
--- a/server/channelserver/model_character.go
+++ b/server/channelserver/model_character.go
@@ -148,6 +148,11 @@ func (save *CharacterSaveData) updateSaveDataWithStruct() {
 	if save.Mode >= cfg.F4 {
 		copy(save.decompSave[save.Pointers[pRP]:save.Pointers[pRP]+saveFieldRP], rpBytes)
 	}
+	if save.Mode >= cfg.S6 {
+		playtimeBytes := make([]byte, 4)
+		binary.LittleEndian.PutUint32(playtimeBytes, save.Playtime)
+		copy(save.decompSave[save.Pointers[pPlaytime]:save.Pointers[pPlaytime]+saveFieldPlaytime], playtimeBytes)
+	}
 	if save.Mode >= cfg.G10 {
 		copy(save.decompSave[save.Pointers[pKQF]:save.Pointers[pKQF]+saveFieldKQF], save.KQF)
 	}