diff --git a/src/apm_cli/bundle/local_bundle.py b/src/apm_cli/bundle/local_bundle.py
index 264cf61c87..9c442e57b5 100644
--- a/src/apm_cli/bundle/local_bundle.py
+++ b/src/apm_cli/bundle/local_bundle.py
@@ -179,6 +179,13 @@ def _read_bundle_lockfile(bundle_dir: Path) -> dict[str, Any] | None:
     return data
 
 
+def _has_pack_manifest(bundle_dir: Path) -> bool:
+    """Whether ``apm.lock.yaml`` carries the pack manifest written by ``apm pack``."""
+    lockfile = _read_bundle_lockfile(bundle_dir)
+    pack = (lockfile or {}).get("pack")
+    return isinstance(pack, dict) and bool(pack)
+
+
 def _extract_pack_targets(lockfile: dict[str, Any] | None) -> list[str]:
     """Return list of pack targets from a parsed bundle lockfile."""
     if not lockfile:
@@ -345,6 +352,11 @@ def detect_local_bundle(path: Path) -> LocalBundleInfo | None:
     if path.is_dir():
         if not (path / "plugin.json").is_file():
             return None
+        if (path / "apm.yml").is_file() and not _has_pack_manifest(path):
+            # An APM source package that happens to ship a plugin.json is a normal
+            # local dependency, not a bundle: only packed bundles carry the pack
+            # manifest in apm.lock.yaml.
+            return None
         return _build_info(
             path,
             is_archive=False,
diff --git a/tests/unit/bundle/test_local_bundle.py b/tests/unit/bundle/test_local_bundle.py
index f00c5c189f..c6639439ac 100644
--- a/tests/unit/bundle/test_local_bundle.py
+++ b/tests/unit/bundle/test_local_bundle.py
@@ -117,6 +117,27 @@ def _make_plugin_bundle(
     return bundle
 
 
+def test_detect_local_bundle_skips_source_package_with_apm_yml(tmp_path: Path) -> None:
+    """A source package with apm.yml and plugin.json is a dependency, not a bundle."""
+    package = tmp_path / "demo-pkg"
+    package.mkdir()
+    (package / "apm.yml").write_text("name: demo-pkg\n", encoding="utf-8")
+    (package / "plugin.json").write_text(json.dumps({"id": "demo-pkg"}), encoding="utf-8")
+
+    assert detect_local_bundle(package) is None
+
+
+def test_detect_local_bundle_keeps_packed_bundle_with_apm_yml(tmp_path: Path) -> None:
+    """A packed bundle stays a bundle even when it also ships an apm.yml."""
+    bundle = _make_plugin_bundle(tmp_path)
+    (bundle / "apm.yml").write_text("name: demo-pkg\n", encoding="utf-8")
+
+    info = detect_local_bundle(bundle)
+
+    assert info is not None
+    assert info.source_dir == bundle
+
+
 def _make_plugin_tarball(tmp_path: Path, bundle_dir: Path) -> Path:
     """Archive a bundle directory into .tar.gz."""
     tmp_path.mkdir(parents=True, exist_ok=True)