diff --git a/repo_to_text/cli/cli.py b/repo_to_text/cli/cli.py
index c3b3166..f753585 100644
--- a/repo_to_text/cli/cli.py
+++ b/repo_to_text/cli/cli.py
@@ -38,6 +38,7 @@ def create_default_settings_file() -> None:
         ignore-content:
           - "README.md"
           - "LICENSE"
+          - "package-lock.json"
     """)
     with open('.repo-to-text-settings.yaml', 'w', encoding='utf-8') as f:
         f.write(default_settings)
diff --git a/tests/test_core.py b/tests/test_core.py
index 1882388..97294dd 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -48,6 +48,7 @@ ignore-tree-and-content:
   - ".repo-to-text-settings.yaml"
 ignore-content:
   - "README.md"
+  - "package-lock.json"
 """
     }