diff --git a/script/hassfest/requirements.py b/script/hassfest/requirements.py
index 5ab54be3ac9a..d8d31899eedf 100644
--- a/script/hassfest/requirements.py
+++ b/script/hassfest/requirements.py
@@ -729,7 +729,7 @@ def check_dependency_files(
             if not (top := file.parts[0].lower()).endswith((".dist-info", ".py")):
                 top_level.add(top)
             if (name := str(file).lower()) in FORBIDDEN_FILE_NAMES or (
-                name.endswith(".pth") and len(file.parts) == 1
+                name.endswith((".pth", ".start")) and len(file.parts) == 1
             ):
                 file_names.add(str(file))
         results = _PackageFilesCheckResult(
diff --git a/tests/hassfest/test_requirements.py b/tests/hassfest/test_requirements.py
index ac95ce1e4d12..c91dddfbd94a 100644
--- a/tests/hassfest/test_requirements.py
+++ b/tests/hassfest/test_requirements.py
@@ -276,6 +276,7 @@ def test_check_dependency_file_names(integration: Integration) -> None:
         PackagePath("py.typed"),
         PackagePath("my_package.py"),
         PackagePath("some_script.Pth"),
+        PackagePath("entry_point.start"),
         PackagePath("my_package-1.0.0.dist-info/METADATA"),
     ]
     with (
@@ -289,20 +290,25 @@ def test_check_dependency_file_names(integration: Integration) -> None:
         assert _packages_checked_files_cache[pkg]["file_names"] == {
             "py.typed",
             "some_script.Pth",
+            "entry_point.start",
         }
-        assert len(integration.errors) == 2
+        assert len(integration.errors) == 3
         assert f"Package {pkg} has a forbidden file 'py.typed' in {package}" in [
             x.error for x in integration.errors
         ]
         assert f"Package {pkg} has a forbidden file 'some_script.Pth' in {package}" in [
             x.error for x in integration.errors
         ]
+        assert (
+            f"Package {pkg} has a forbidden file 'entry_point.start' in {package}"
+            in [x.error for x in integration.errors]
+        )
         integration.errors.clear()
 
         # Repeated call should use cache
         assert check_dependency_files(integration, package, pkg, ()) is False
         assert mock_files.call_count == 1
-        assert len(integration.errors) == 2
+        assert len(integration.errors) == 3
         integration.errors.clear()
 
     # All good