diff --git a/MSIM/common/run_post_pnr_msim_task.py b/MSIM/common/run_post_pnr_msim_task.py
index b256062..3aac9be 100644
--- a/MSIM/common/run_post_pnr_msim_task.py
+++ b/MSIM/common/run_post_pnr_msim_task.py
@@ -17,6 +17,7 @@ import logging
 import subprocess
 import glob
 import threading
+import multiprocessing
 import run_post_pnr_msim_test
 
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