diff --git a/MANIFEST.in b/MANIFEST.in
index 2c28207f1..e72c44931 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,4 @@
 include README.rst LICENSE CHANGELOG.rst
 recursive-include tests *
 global-exclude *.pyc __pycache__
+global-include *.typed
diff --git a/setup.py b/setup.py
index 71a3655fa..4f697a704 100644
--- a/setup.py
+++ b/setup.py
@@ -58,6 +58,7 @@
     packages=find_namespace_packages(
         exclude=("tests*", "system_tests*", "docs*", "samples*")
     ),
+    package_data={"google.auth": ["py.typed"], "google.oauth2": ["py.typed"]},
     install_requires=DEPENDENCIES,
     extras_require=extras,
     python_requires=">=3.7",
diff --git a/system_tests/secrets.tar.enc b/system_tests/secrets.tar.enc
index 44f0be23b..254396d33 100644
Binary files a/system_tests/secrets.tar.enc and b/system_tests/secrets.tar.enc differ