diff --git a/scripts/scVILP_main.py b/scripts/scVILP_main.py
index db2647e..1e5523f 100644
--- a/scripts/scVILP_main.py
+++ b/scripts/scVILP_main.py
@@ -17,7 +17,7 @@
 from scipy.special import gammaln
 from ete3 import Tree
 import time 
-from cdecimal import Decimal
+from decimal import Decimal
 import scipy.cluster.hierarchy as hier
 import scipy.spatial.distance as dist
 import parser