diff --git a/docs/reference/contributing.md b/docs/reference/contributing.md
index 2b5b8176..fb02c30e 100644
--- a/docs/reference/contributing.md
+++ b/docs/reference/contributing.md
@@ -6,6 +6,23 @@
 
 You can [create a new GitHub issue](https://github.com/khuedoan/homelab/issues/new/choose) with the bug report template.
 
-### Merge request
+### Submitting patches
 
-TODO
+Because you may have a lot of changes in your fork, you can't create a pull request directly from your `master` branch.
+Instead, create a branch from the upstream repository and commit your changes there:
+
+```sh
+git remote add upstream https://github.com/khuedoan/homelab
+git fetch upstream
+git checkout upstream/master
+git checkout -b contrib-fix-something
+
+# Make your changes here
+#
+# nvim README.md
+# git cherry-pick a1b2c3
+#
+# commit, push, etc. as usual
+```
+
+Then you can send the patch using [GitHub pull request](https://github.com/khuedoan/homelab/pulls) or `git send-email` to <mail@khuedoan.com>.