diff --git a/Class_Diagram.md b/Class_Diagram.md
index 1e5128e..777c911 100644
--- a/Class_Diagram.md
+++ b/Class_Diagram.md
@@ -437,7 +437,7 @@ package Data <<Database>> #ddd {
       
 	  class DieExtensions <<static>> $todo
       
-      class DieDbManager $todo
+      class DiceGroupDbManager $todo
     
       class FaceEntity $todo
       
@@ -495,7 +495,7 @@ DiceAppDbContext -up-> "[*]" GameEntity
 DiceAppDbContext --> "[*]" TurnEntity
 
 PlayerDbManager -up-> DiceAppDbContext
-DieDbManager -left-> DiceAppDbContext
+DiceGroupDbManager -left-> DiceAppDbContext
 GameDbManager -down-> DiceAppDbContext
 
 @enduml
@@ -524,7 +524,7 @@ package Data <<Database>> #ddd {
       
 	  class DieExtensions <<static>> $todo
       
-      class DieDbManager $todo
+      class DiceGroupDbManager $todo
     
       class FaceEntity $todo
       
@@ -577,7 +577,7 @@ DiceAppDbContext -up-> "[*]" GameEntity
 DiceAppDbContext -up-> "[*]" TurnEntity
 
 PlayerDbManager -up-> DiceAppDbContext
-DieDbManager -left-> DiceAppDbContext
+DiceGroupDbManager -left-> DiceAppDbContext
 GameDbManager -down-> DiceAppDbContext
 
 @enduml
@@ -671,7 +671,7 @@ package Data <<Database>> #ddd {
     
       class DieEntity $todo
       
-      class DieDbManager $todo
+      class DiceGroupDbManager $todo
       
       class FaceEntity $todo
     }
@@ -715,7 +715,7 @@ DiceAppDbContext -up-> "[*] /+Games" GameEntity
 DiceAppDbContext -up-> "[*] /+Turns" TurnEntity
 
 PlayerDbManager --> "-db" DiceAppDbContext
-DieDbManager --> "-db" DiceAppDbContext
+DiceGroupDbManager --> "-db" DiceAppDbContext
 GameDbManager -down-> "-db" DiceAppDbContext
 
 @enduml