diff --git a/src/restore.sh b/src/restore.sh
index 14b6c3d..1745731 100644
--- a/src/restore.sh
+++ b/src/restore.sh
@@ -4,6 +4,7 @@ set -u # `-e` omitted intentionally, but i can't remember why exactly :'(
 set -o pipefail
 
 source ./env.sh
+source ./helpers.sh
 
 s3_uri_base="s3://${S3_BUCKET}/${S3_PREFIX}"