diff --git a/source/index.rst b/source/index.rst
index 382c8c7e..e065cd45 100644
--- a/source/index.rst
+++ b/source/index.rst
@@ -52,6 +52,7 @@ Here is the **v0.1.0**
    3D Location Encoder/Sphere2Vec-sphereC+.md
    3D Location Encoder/Sphere2Vec-sphereM.md
    3D Location Encoder/Sphere2Vec-sphereM+.md
+   3D Location Encoder/Spherical-Harmonics.md