diff --git a/setup.py b/setup.py
index 9f3b8be..1abb5c8 100644
--- a/setup.py
+++ b/setup.py
@@ -7,6 +7,8 @@
     package_dir={"": "src"},
     # expose qreader.py as the unique module
     py_modules=["qreader"],
+    # include py.typed file in the distribution
+    package_data={"qreader": ["src/qreader/py.typed"]},
     url="https://github.com/Eric-Canas/qreader",
     license="MIT",
     author="Eric Canas",
diff --git a/src/qreader/__init__.py b/src/qreader/__init__.py
index cafa3eb..a9af241 100644
--- a/src/qreader/__init__.py
+++ b/src/qreader/__init__.py
@@ -196,9 +196,12 @@ def decode(
 
     def detect_and_decode(
         self, image: np.ndarray, return_detections: bool = False, is_bgr: bool = False
-    ) -> typing.Tuple[
+    ) -> typing.Union[
+        typing.Tuple[
+            typing.Tuple[str | None, ...],
+            tuple[dict[str, np.ndarray | float | tuple[float | int, float | int]]] | None,
+        ],
         typing.Tuple[str | None, ...],
-        tuple[dict[str, np.ndarray | float | tuple[float | int, float | int]]] | None,
     ]:
         """
         This method will decode the **QR** codes in the given image and return the decoded strings
diff --git a/src/qreader/py.typed b/src/qreader/py.typed
new file mode 100644
index 0000000..e69de29