diff --git a/src/renee/orchestrate.py b/src/renee/orchestrate.py
index 4792e17..374c151 100644
--- a/src/renee/orchestrate.py
+++ b/src/renee/orchestrate.py
@@ -4,6 +4,7 @@
 from ccbr_tools.pipeline.util import (
     get_hpcname,
     get_tmp_dir,
+    _get_file_mtime,
 )
 from ccbr_tools.pipeline.cache import get_singularity_cachedir