diff --git a/README.md b/README.md
index af85a85..c5631cf 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,6 @@ Python implementation of k-Shape
 
 ```
 from kshape import kshape, zscore
-import numpy as np
 
 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 b5ccc3d..f3a7dfc 100644
--- a/example.py
+++ b/example.py
@@ -1,5 +1,4 @@
 from kshape import kshape, zscore
-import numpy as np
 
 time_series = [[1,2,3,4], [0,1,2,3], [-1,1,-1,1], [1,2,2,3]]
 cluster_num = 2