diff --git a/.gitignore b/.gitignore
index d7785bbc8db..ad26864221e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,6 +66,7 @@ dask-worker-space/
 doc/_build
 doc/generated
 xarray/version.py
+xarray/tests/data/*.grib.*.idx
 
 # Sync tools
 Icon*