diff --git a/.github/actions/auto-assign-action b/.github/actions/auto-assign-action
new file mode 160000
index 0000000000..288f36f8ce
--- /dev/null
+++ b/.github/actions/auto-assign-action
@@ -0,0 +1 @@
+Subproject commit 288f36f8cea1dded676b9c4477a64ff91e50c104
diff --git a/.gitmodules b/.gitmodules
index 3b91677a6a..bb2ed97946 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -21,3 +21,7 @@
 [submodule ".github/actions/translate-on-issue"]
 	path = .github/actions/translate-on-issue
 	url = https://github.com/xingchun-chen/translation-helper
+[submodule ".github/actions/auto-assign-action"]
+	path = .github/actions/auto-assign-action
+	url = https://github.com/kentaro-m/auto-assign-action.git
+	branch = 288f36f