diff --git a/ne-pas-effacer-svp-je-test-la.md b/ne-pas-effacer-svp-je-test-la.md
index 0289b87..db0ef7c 100644
--- a/ne-pas-effacer-svp-je-test-la.md
+++ b/ne-pas-effacer-svp-je-test-la.md
@@ -30,7 +30,9 @@ package "Qwirkle" {
 
   Games ..> Players : <<import>>
   
-  GamePersistence ..> Game : <<access>>
-  LeaderboardPersistence ..> Leaderboard : <<access>>
+  IGamePersistence ..> Game : <<access>>
+  ILeaderboardPersistence ..> Leaderboard : <<access>>
+  IGamePersistence ..|> GamePersistencejson
+  ILeaderboardPersistence ..|> Leaderboardjson
 }
 @enduml
\ No newline at end of file