diff --git a/workflow/scripts/convert_reads.py b/workflow/scripts/convert_reads.py
index b16964c4c9c29a00f70a7f30b1232b79caa64829..2c39680f97fcdc95eaee94a6d27cb5511e05ce95 100644
--- a/workflow/scripts/convert_reads.py
+++ b/workflow/scripts/convert_reads.py
@@ -5,6 +5,7 @@
 import os
 import argparse
 import shutil
+import subprocess
 import shlex
 import logging
 from multiprocessing import cpu_count