diff --git a/doc/source/index.rst b/doc/source/index.rst
index 868d4b349c30af037a4802ad6643a141f0585716..97962f8a56cf276e520bdcef90fac1fb899aff0b 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -18,7 +18,7 @@ csst_proto
 homepage
 --------
 
-`csst_proto` is the pipeline package for the **CSST** (Chinese Space Station Telescope).
+`csst_proto` is the CSST L1 pipeline prototype.
 
 GitLab:
 https://csst-tb.bao.ac.cn/code/csst-l1/csst_proto