diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 0000000..7679bef
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,3 @@
+# https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners
+
+* @peaceiris