diff --git a/scopyon/analysis/spot_detection.py b/scopyon/analysis/spot_detection.py
index 4d48af6..f37da25 100644
--- a/scopyon/analysis/spot_detection.py
+++ b/scopyon/analysis/spot_detection.py
@@ -1,4 +1,5 @@
 import dataclasses
+from multiprocessing import Pool
 
 import numpy
 import scipy.optimize