diff --git a/scripts/update_sc2_datasets b/scripts/update_sc2_datasets
index 40ad9c93..f4ec9f43 100755
--- a/scripts/update_sc2_datasets
+++ b/scripts/update_sc2_datasets
@@ -57,7 +57,7 @@ function update_dataset() {
   echo "$(write_changelog "${dataset_name}")$(<data/${dataset_name}/CHANGELOG.md)" > "data/${dataset_name}/CHANGELOG.md"
 }
 export -f update_dataset
-parallel --jobs "${#trees[@]}" update_dataset ::: "${!trees[@]}" ::: "${trees[@]}"
+parallel --jobs "${#trees[@]}" update_dataset :::+ "${!trees[@]}" :::+ "${trees[@]}"
 
 
 # Setup git identity