diff --git a/contrib/numpy/index.md b/contrib/numpy/index.md
index 18ed17a..4b4a2c8 100644
--- a/contrib/numpy/index.md
+++ b/contrib/numpy/index.md
@@ -7,3 +7,4 @@
 - [Operations on Arrays in NumPy](operations-on-arrays.md)
 - [Loading Arrays from Files](loading_arrays_from_files.md)
 - [Saving Numpy Arrays into FIles](saving_numpy_arrays_to_files.md)
+- [Sorting NumPy Arrays](sorting_numpy_array.md)