diff --git a/src/test_target_2/constants.py b/src/test_target_2/constants.py
index 616f651..75bc36f 100644
--- a/src/test_target_2/constants.py
+++ b/src/test_target_2/constants.py
@@ -1,3 +1,4 @@
 """Package-level constants for test_target_2."""
 
 DEFAULT_HELLO_TARGET: str = "world"
+DEFAULT_FAREWELL: str = "goodbye"
diff --git a/tests/test_constants.py b/tests/test_constants.py
index 29edbd7..a6599dd 100644
--- a/tests/test_constants.py
+++ b/tests/test_constants.py
@@ -17,3 +17,11 @@ def test_constants_module_importable() -> None:
     """Test that constants module can be imported from package."""
     # Import succeeds at module scope; this test verifies the object exists
     assert hasattr(constants, "DEFAULT_HELLO_TARGET")
+
+
+def test_default_farewell_value() -> None:
+    assert constants.DEFAULT_FAREWELL == "goodbye"
+
+
+def test_default_farewell_type() -> None:
+    assert isinstance(constants.DEFAULT_FAREWELL, str)