diff --git a/dials_data/definitions/centroid_test_data.yml b/dials_data/definitions/centroid_test_data.yml
index 205585d..0245d6e 100644
--- a/dials_data/definitions/centroid_test_data.yml
+++ b/dials_data/definitions/centroid_test_data.yml
@@ -40,3 +40,4 @@ data:
   - url: https://github.com/dials/data-files/raw/a02df474ff193f102624bd08038cdc2c421dc8ee/centroid_test_data/strong.pickle
   - url: https://github.com/dials/data-files/raw/a02df474ff193f102624bd08038cdc2c421dc8ee/centroid_test_data/sweep.json
   - url: https://github.com/dials/data-files/raw/a02df474ff193f102624bd08038cdc2c421dc8ee/centroid_test_data/XDS.INP
+  - url: https://github.com/dials/data-files/raw/6d480ff8635232b9d04621603285fd9c92277846/centroid_test_data/lookup_pedestal.pickle.bz2