diff --git a/lib/DatabaseModel.ts b/lib/DatabaseModel.ts
index 9b4d211..6f03dc3 100644
--- a/lib/DatabaseModel.ts
+++ b/lib/DatabaseModel.ts
@@ -32,6 +32,6 @@ export abstract class DatabaseModel {
     this.data[key] = value;
   }
 
-  public abstract async read(): Promise<void>;
-  public abstract async write(): Promise<void>;
+  public abstract async read(): Promise<boolean>;
+  public abstract async write(): Promise<boolean>;
 }