diff --git a/mssql_python/py.typed b/mssql_python/py.typed
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/mssql_python/py.typed
@@ -0,0 +1 @@
+
diff --git a/setup.py b/setup.py
index a2d2c340..1a2bae2d 100644
--- a/setup.py
+++ b/setup.py
@@ -94,6 +94,7 @@ def finalize_options(self):
     package_data={
         # Include PYD and DLL files inside mssql_python, exclude YML files
         'mssql_python': [
+            'py.typed',  # Marker file for PEP 561 typing support
             'ddbc_bindings.cp*.pyd',  # Include all PYD files
             'ddbc_bindings.cp*.so',  # Include all SO files
             'libs/*',