diff --git a/.gitignore b/.gitignore
index be5f0b2c..dff1e436 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,5 @@ signac_project_document.json
 .signac_sp_cache.json.gz
 __pycache__
 .signac
+.bundles
 *.code-workspace
diff --git a/.ignore b/.ignore
new file mode 100644
index 00000000..c7d913e5
--- /dev/null
+++ b/.ignore
@@ -0,0 +1 @@
+!hoomd_validation/config.yaml