diff --git a/packages/google-cloud-access-context-manager/noxfile.py b/packages/google-cloud-access-context-manager/noxfile.py
index 44307fed8d2d..cf10b120e0b5 100644
--- a/packages/google-cloud-access-context-manager/noxfile.py
+++ b/packages/google-cloud-access-context-manager/noxfile.py
@@ -217,7 +217,7 @@ def install_systemtest_dependencies(session, *constraints):
         session.install("-e", ".", *constraints)
 
 
-@nox.session(python=["3.7", "3.8", "3.9"])
+@nox.session(python=UNIT_TEST_PYTHON_VERSIONS)
 @nox.parametrize(
     "library",
     [
diff --git a/packages/google-cloud-access-context-manager/testing/constraints-3.11.txt b/packages/google-cloud-access-context-manager/testing/constraints-3.11.txt
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/packages/google-cloud-access-context-manager/testing/constraints-3.12.txt b/packages/google-cloud-access-context-manager/testing/constraints-3.12.txt
new file mode 100644
index 000000000000..e69de29bb2d1