diff --git a/rdflib/graph.py b/rdflib/graph.py
index 6e2e50affe..f053ea43c2 100644
--- a/rdflib/graph.py
+++ b/rdflib/graph.py
@@ -1225,7 +1225,7 @@ def absolutize(self, uri: str, defrag: int = 1) -> URIRef:
     # no destination and non-None positional encoding
     @overload
     def serialize(
-        self,
+        self: _GraphT,
         destination: None,
         format: str,
         base: Optional[str],
@@ -1237,7 +1237,7 @@ def serialize(
     # no destination and non-None keyword encoding
     @overload
     def serialize(
-        self,
+        self: _GraphT,
         destination: None = ...,
         format: str = ...,
         base: Optional[str] = ...,
@@ -1250,7 +1250,7 @@ def serialize(
     # no destination and None encoding
     @overload
     def serialize(
-        self,
+        self: _GraphT,
         destination: None = ...,
         format: str = ...,
         base: Optional[str] = ...,
@@ -1262,25 +1262,25 @@ def serialize(
     # non-None destination
     @overload
     def serialize(
-        self,
+        self: _GraphT,
         destination: Union[str, pathlib.PurePath, IO[bytes]],
         format: str = ...,
         base: Optional[str] = ...,
         encoding: Optional[str] = ...,
         **args: Any,
-    ) -> "Graph":
+    ) -> _GraphT:
         ...
 
     # fallback
     @overload
     def serialize(
-        self,
+        self: _GraphT,
         destination: Optional[Union[str, pathlib.PurePath, IO[bytes]]] = ...,
         format: str = ...,
         base: Optional[str] = ...,
         encoding: Optional[str] = ...,
         **args: Any,
-    ) -> Union[bytes, str, "Graph"]:
+    ) -> Union[bytes, str, _GraphT]:
         ...
 
     def serialize(
@@ -2193,6 +2193,16 @@ def context_id(self, uri: str, context_id: Optional[str] = None) -> URIRef:
             context_id = "#context"
         return URIRef(context_id, base=uri)
 
+    def serialize(  # type: ignore [override]
+        self: _ConjunctiveGraphT,
+        destination: Optional[Union[str, pathlib.PurePath, IO[bytes]]] = None,
+        format: str = "trig",
+        base: Optional[str] = None,
+        encoding: Optional[str] = None,
+        **args: Any,
+    ) -> Union[bytes, str, _ConjunctiveGraphT]:
+        return super().serialize(destination, format, base, encoding, **args)
+
     def parse(
         self,
         source: Optional[