diff --git a/scripts/upgrade b/scripts/upgrade
index 2652de2..c9da671 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -33,7 +33,7 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=3
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir" --full_replace=1
+	ynh_setup_source --dest_dir="$install_dir" --full_replace=1 --keep="data"
 fi
 
 chmod -R o-rwx "$install_dir"