diff --git a/pydantic_changedetect/changedetect.py b/pydantic_changedetect/changedetect.py
index 91244bc..398c799 100644
--- a/pydantic_changedetect/changedetect.py
+++ b/pydantic_changedetect/changedetect.py
@@ -473,8 +473,8 @@ def model_dump(  # pyright: ignore [reportRedeclaration]
                 self,
                 *,
                 mode: Union[Literal['json', 'python'], str] = 'python',
-                include: "IncEx" = None,
-                exclude: "IncEx" = None,
+                include: "IncEx | None" = None,
+                exclude: "IncEx | None" = None,
                 context: Optional[Dict[str, Any]] = None,  # Available since 2.7
                 by_alias: bool = False,
                 exclude_unset: bool = False,
@@ -513,8 +513,8 @@ def model_dump_json(  # pyright: ignore [reportRedeclaration]
                 self,
                 *,
                 indent: Optional[int] = None,
-                include: "IncEx" = None,
-                exclude: "IncEx" = None,
+                include: "IncEx | None" = None,
+                exclude: "IncEx | None" = None,
                 context: Optional[Dict[str, Any]] = None,  # Available since 2.7
                 by_alias: bool = False,
                 exclude_unset: bool = False,
@@ -553,8 +553,8 @@ def model_dump(  # pyright: ignore [reportIncompatibleMethodOverride]
                 self,
                 *,
                 mode: Union[Literal['json', 'python'], str] = 'python',
-                include: "IncEx" = None,
-                exclude: "IncEx" = None,
+                include: "IncEx | None" = None,
+                exclude: "IncEx | None" = None,
                 by_alias: bool = False,
                 exclude_unset: bool = False,
                 exclude_defaults: bool = False,
@@ -589,8 +589,8 @@ def model_dump_json(  # pyright: ignore [reportIncompatibleMethodOverride]
                 self,
                 *,
                 indent: Optional[int] = None,
-                include: "IncEx" = None,
-                exclude: "IncEx" = None,
+                include: "IncEx | None" = None,
+                exclude: "IncEx | None" = None,
                 by_alias: bool = False,
                 exclude_unset: bool = False,
                 exclude_defaults: bool = False,