diff --git a/.github/workflows/trigger-template-update.yml b/.github/workflows/trigger-template-update.yml
new file mode 100644
index 0000000..4fdf5b2
--- /dev/null
+++ b/.github/workflows/trigger-template-update.yml
@@ -0,0 +1,73 @@
+name: Update Child Repository Template
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      target_repository:
+        description: "Target repository to update (default: mjun0812/python-project-template)"
+        required: false
+        default: "mjun0812/python-project-template"
+
+jobs:
+  update-child-template:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout child repository
+        uses: actions/checkout@v4
+        with:
+          repository: ${{ github.event.inputs.target_repository || 'mjun0812/python-project-template' }}
+          token: ${{ secrets.CHILD_REPO_TOKEN }}
+          path: child-repo
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.12"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v3
+
+      - name: Update template in child repository
+        working-directory: child-repo
+        run: |
+          # Update from template
+          uvx copier update -A --trust
+
+      - name: Check for changes
+        id: changes
+        working-directory: child-repo
+        run: |
+          if git diff --quiet; then
+            echo "has_changes=false" >> $GITHUB_OUTPUT
+          else
+            echo "has_changes=true" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create Pull Request
+        if: steps.changes.outputs.has_changes == 'true'
+        uses: peter-evans/create-pull-request@v5
+        with:
+          token: ${{ secrets.CHILD_REPO_TOKEN }}
+          path: child-repo
+          commit-message: |
+            Update template to version ${{ github.event.release.tag_name || 'latest' }}
+          title: "Update template to version ${{ github.event.release.tag_name || 'latest' }}"
+          body: |
+            ## Template Update
+
+            This PR updates the project template to version `${{ github.event.release.tag_name || 'latest' }}`.
+
+            ### Changes
+            - Updated from template: ${{ github.repository }}
+            - Template version: ${{ github.event.release.tag_name || 'latest' }}
+            ${{ github.event.release.html_url && format('- Release notes: {0}', github.event.release.html_url) || '' }}
+
+            ### Testing
+            Please review the changes and test the updated template before merging.
+
+            ---
+            *This PR was automatically created by the template update workflow.*
+          branch: template-update-${{ github.event.release.tag_name || github.run_number }}
+          delete-branch: true
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d1885f6
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 Junya Morioka
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index 0d5ff5e..94416b0 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ A simple modern Python project template powered by [Copier](https://copier.readt
 ### Generate a New Project
 
 ```bash
-uvx copier copy https://github.com/mjun0812/python-copier-template your-project-name
+uvx copier copy gh:mjun0812/python-copier-template your-project-name
 ```
 
 Follow the interactive prompts to configure your project:
@@ -63,7 +63,7 @@ uv run ruff check .
 uv run ruff check . --fix
 ```
 
-## Docker Development
+### Docker Development Setup
 
 The template includes a complete Docker setup:
 
@@ -84,6 +84,13 @@ docker compose up
 
 Open the project in VS Code and use the "Reopen in Container" command for a fully configured development environment.
 
+### Update Template
+
+```bash
+cd your-project-name
+uvx copier update -A
+```
+
 ## Project Structure
 
 ```text