diff --git a/contrib/pandas/index.md b/contrib/pandas/index.md
index 82596a2..cff8136 100644
--- a/contrib/pandas/index.md
+++ b/contrib/pandas/index.md
@@ -1,3 +1,5 @@
 # List of sections
+- Pandas Series Vs NumPy ndarray
 
 - [Section title](filename.md)
+- [Pandas Series Vs NumPy ndarray)(Pandas_Series_Vs_NumPy_ndarray.md)