docs: edit README

1 files changed, 8 insertions, 0 deletions

diff --git a/README.md b/README.md
index 78b0ba4..86ef8d8 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,14 @@ You may specify options in config.toml (or config.yaml/config.json) of your site
 
 For an example of `config.toml`, [config.toml](https://github.com/thingsym/hugo-theme-techdoc/blob/master/exampleSite/config.toml) in exampleSite.
 
+### Update Hugo theme for git submodule
+
+```
+git submodule update --remote
+git add themes/hugo-theme-techdoc
+git commit
+```
+
 ### Directory layout
 
 ```