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 32d109bb..3c6a34bb 100644
--- a/setup.py
+++ b/setup.py
@@ -107,6 +107,7 @@ 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/*",