diff --git a/README.md b/README.md
index a1c9004..60939cf 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,17 @@
-# gentoo-overlay
+Millerson Gentoo Overlay
 
-Millerson Gentoo overlay
\ No newline at end of file
+Using repository with newer portage
+A package manager with git repository support can be used for sync. Portage version 2.2.16 and later supports git sync.
+
+The repos.conf entry for repository sync may look like the following:
+
+```
+[millerson-overlay]
+location = /usr/local/portage/millerson-overlay
+sync-type = git
+sync-uri = https://git.millerson.name/millerson.name/gentoo-overlay.git
+auto-sync = true
+clone-depth = 1
+```
+
+Please note that if you use existing repository location, you need to remove the existing repository first.
diff --git a/profiles/repo_name b/profiles/repo_name
new file mode 100644
index 0000000..8df7069
--- /dev/null
+++ b/profiles/repo_name
@@ -0,0 +1 @@
+millerson-overlay