diff --git a/aurora/models/base.py b/aurora/models/base.py
index 7f91e34..d3bc075 100644
--- a/aurora/models/base.py
+++ b/aurora/models/base.py
@@ -13,7 +13,7 @@ class AuroraBaseModel(BaseModel):
     def dump(self) -> dict:
         return self.model_dump(exclude={"bot"})
 
-    def to_json(self, indent: int | None = None, file: Any | None = None, **kwargs):
+    def to_json(self, indent: int | None = None, file: Any | None = None, **kwargs) -> str:
         from ..utilities.json import dump, dumps  # pylint: disable=cyclic-import
         return dump(self.dump(), file, indent=indent, **kwargs) if file else dumps(self.dump(), indent=indent, **kwargs)
 
@@ -26,6 +26,6 @@ class AuroraGuildModel(AuroraBaseModel):
     def dump(self) -> dict:
         return self.model_dump(exclude={"bot", "guild_id", "guild"})
 
-    def to_json(self, indent: int | None = None, file: Any | None = None, **kwargs):
+    def to_json(self, indent: int | None = None, file: Any | None = None, **kwargs) -> str:
         from ..utilities.json import dump, dumps  # pylint: disable=cyclic-import
         return dump(self.dump(), file, indent=indent, **kwargs) if file else dumps(self.dump(), indent=indent, **kwargs)