diff --git a/README.md b/README.md
index 27c5208..6df3869 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ cd dsp-site
 git submodule update --init --recursive plugins/thirdparty/md-metayaml
 git submodule update --init plugins/official
 git submodule update --init plugins/thirdparty/pelican-css
+git submodule update --init plugins/thirdparty/pelidoc
+git submodule update --init plugins/thirdparty/yuicompressor-opt
 git submodule update --init themes/bootstrap4
 ```