diff --git a/src/colab_cli/auto_update.py b/src/colab_cli/auto_update.py
index e9aab3c..5158d42 100644
--- a/src/colab_cli/auto_update.py
+++ b/src/colab_cli/auto_update.py
@@ -42,7 +42,7 @@
 def get_app_version() -> str:
     """Return the installed package version, falling back to the git short hash."""
     try:
-        return installed_version("colab")
+        return installed_version("google-colab-cli")
     except (PackageNotFoundError, InvalidVersion):
         pass
 
diff --git a/tests/test_version.py b/tests/test_version.py
index 6d41b28..7ee0776 100644
--- a/tests/test_version.py
+++ b/tests/test_version.py
@@ -27,6 +27,10 @@ def test_version_installed():
         result = runner.invoke(app, ["version"])
         assert result.exit_code == 0
         assert "Version: 0.2.0" in result.output
+        # Guard against a silent regression if the PyPI distribution name
+        # changes again: importlib.metadata.version() must be called with
+        # the distribution name exactly as it appears in pyproject.toml.
+        mock_version.assert_called_with("google-colab-cli")
 
 
 def test_version_git_fallback():