diff --git a/README.md b/README.md
index f51aba7..af85a85 100644
--- a/README.md
+++ b/README.md
@@ -5,9 +5,8 @@ Python implementation of k-Shape
 ### Usage
 
 ```
-from kshape import kshape
+from kshape import kshape, zscore
 import numpy as np
-from scipy.stats import zscore
 
 time_series = [[1,2,3,4], [0,1,2,3], [-1,1,-1,1], [1,2,2,3]]
 cluster_num = 2
diff --git a/example.py b/example.py
index 7b627f4..b5ccc3d 100644
--- a/example.py
+++ b/example.py
@@ -1,6 +1,5 @@
-from kshape import kshape
+from kshape import kshape, zscore
 import numpy as np
-from scipy.stats import zscore
 
 time_series = [[1,2,3,4], [0,1,2,3], [-1,1,-1,1], [1,2,2,3]]
 cluster_num = 2