diff --git a/dials_data/definitions/i04_weak_data.yml b/dials_data/definitions/i04_weak_data.yml
index 588715b..66ea348 100644
--- a/dials_data/definitions/i04_weak_data.yml
+++ b/dials_data/definitions/i04_weak_data.yml
@@ -11,3 +11,4 @@ data:
   - url: https://github.com/dials/data-files/raw/74124d198705e17e9a14fb11ebfa866faab337ee/i04_weak_data/experiments_import.json
   - url: https://github.com/dials/data-files/raw/74124d198705e17e9a14fb11ebfa866faab337ee/i04_weak_data/full.pickle
   - url: https://github.com/dials/data-files/raw/74124d198705e17e9a14fb11ebfa866faab337ee/i04_weak_data/indexed.pickle
+  - url: https://github.com/dials/data-files/raw/9d23e34ecb14be5e839b48c0dffd80cc8e63dec4/i04_weak_data/first_image.pickle