diff --git a/lib/spack/docs/index.rst b/lib/spack/docs/index.rst
index 4dffe6f0911..2e99e96a3eb 100644
--- a/lib/spack/docs/index.rst
+++ b/lib/spack/docs/index.rst
@@ -4,9 +4,13 @@
    contain the root `toctree` directive.
 
 ===================
-Spack Documentation
+Spack
 ===================
 
+.. epigraph::
+
+   `These are docs for the Spack package manager. For sphere packing, see` `pyspack <https://pyspack.readthedocs.io>`_.
+
 Spack is a package management tool designed to support multiple
 versions and configurations of software on a wide variety of platforms
 and environments.  It was designed for large supercomputing centers,