diff --git a/.github/workflows/toc.yml b/.github/workflows/toc.yml
new file mode 100644
index 00000000..e0e83ea5
--- /dev/null
+++ b/.github/workflows/toc.yml
@@ -0,0 +1,11 @@
+on: push
+name: TOC Generator
+jobs:
+  assignAuthor:
+    name: TOC Generator
+    runs-on: ubuntu-latest
+    steps:
+      - name: TOC Generator
+        uses: technote-space/toc-generator@v1
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/README.md b/README.md
index da53a3ec..ad3341b4 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,18 @@
 
 GitHub actions to assign author to issue or PR.  
 
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+
+
+- [Screenshot](#screenshot)
+- [Installation](#installation)
+- [Action event details](#action-event-details)
+  - [Target events](#target-events)
+- [Author](#author)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
 ## Screenshot
 ![GitHub Action](https://raw.githubusercontent.com/technote-space/assign-author/images/screenshot.gif)