diff --git a/.github/README_templates/en.md b/.github/README_templates/en.md
index ce37d56..02c9b56 100644
--- a/.github/README_templates/en.md
+++ b/.github/README_templates/en.md
@@ -284,6 +284,9 @@ Toggles whether messages which are showed frequently show or not. This setting w
 
 <!-- $inject(how_to_use) -->
 
+#### Additional note
+In addition to the avatar download method described here, you can also download avatar files from the "Releases" section on the right side of the repository's top page. A zip file of each avatar is attached to the "Assets" section of each release note.
+
 <!-- $inject(notes) -->
 
 ## Links
diff --git a/.github/README_templates/jp.md b/.github/README_templates/jp.md
index 8b1a237..8974735 100644
--- a/.github/README_templates/jp.md
+++ b/.github/README_templates/jp.md
@@ -282,6 +282,9 @@ Mobが被っているプレイヤーの頭は設定に関わらず、デフォ
 
 <!-- $inject(how_to_use) -->
 
+#### 追記事項
+ここに書かれてあるアバターのダウンロード方法の他に、レポジトリのトップページの右側にある「Releases」からでもアバターファイルをダウンロードできるようにしました。各リリースノートの「Assets」の項目に各アバターのzipファイルが添付されています。
+
 <!-- $inject(notes) -->
 
 ## リンク集
diff --git a/.github/workflows/attach_avatars.yml b/.github/workflows/attach_avatars.yml
new file mode 100644
index 0000000..cb08788
--- /dev/null
+++ b/.github/workflows/attach_avatars.yml
@@ -0,0 +1,20 @@
+name: Attach avatars to release assets
+
+on:
+  release:
+    types:
+      - released
+      - prereleased
+
+jobs:
+  get_target_branches:
+    name: Get target branches
+    uses: ./.github/workflows/get_target_branches.yml
+  attach_avatar:
+    name: Attach avatars to release assets
+    needs: get_target_branches
+    permissions:
+      contents: write
+    uses: Gakuto1112/MyFiguraAvatarPacker/.github/workflows/attach_avatars.yml@main
+    with:
+      target_branches: ${{ needs.get_target_branches.outputs.target_branches }}
\ No newline at end of file
diff --git a/.github/workflows/dispatch_readme.yml b/.github/workflows/dispatch_readme.yml
index df3dc00..5f6bd69 100644
--- a/.github/workflows/dispatch_readme.yml
+++ b/.github/workflows/dispatch_readme.yml
@@ -1,4 +1,4 @@
-name: Dispatch README
+name: Dispatch readme
 
 on:
   repository_dispatch:
@@ -6,13 +6,17 @@ on:
       - dispatch_readme
 
 jobs:
+  get_target_branches:
+    name: Get target branches
+    uses: ./.github/workflows/get_target_branches.yml
   generate:
-    name: Generate README
+    name: Generate readme
+    needs: get_target_branches
     permissions:
       contents: write
     strategy:
       matrix:
-        target-branch: ${{ fromJSON(vars.TARGET_BRANCHES) }}
+        target-branch: ${{ fromJSON(needs.get_target_branches.outputs.target_branches) }}
     uses: Gakuto1112/FiguraAvatarsReadmeTemplate/.github/workflows/generate_my_figura_avatar_readme.yml@main
     with:
       branch-name: ${{ matrix.target-branch }}
\ No newline at end of file
diff --git a/.github/workflows/generate_readme.yml b/.github/workflows/generate_readme.yml
index b23067b..03d4f88 100644
--- a/.github/workflows/generate_readme.yml
+++ b/.github/workflows/generate_readme.yml
@@ -3,10 +3,7 @@ name: Generate README
 on:
   push:
     branches:
-      - Senko
-      - Shiro
-      - Suzu
-      - Sora
+      - '[A-Z]*'
     paths:
       - .github/README_templates/**
       - .github/workflows/generate_readme.yml
diff --git a/.github/workflows/get_target_branches.yml b/.github/workflows/get_target_branches.yml
new file mode 100644
index 0000000..774d402
--- /dev/null
+++ b/.github/workflows/get_target_branches.yml
@@ -0,0 +1,28 @@
+name: Get target branches
+
+on:
+  workflow_call:
+    outputs:
+      target_branches:
+        description: The array of merge target branches
+        value: ${{ jobs.get_target_branches.outputs.target_branches }}
+
+jobs:
+  get_target_branches:
+    name: Get target branches
+    runs-on: ubuntu-latest
+    outputs:
+      target_branches: ${{ steps.output_target_branches.outputs.target_branches }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4.1.6
+        with:
+          fetch-depth: 0
+      - name: Get target branches
+        run: |
+          echo '[' > ./branch_list.json
+          git branch -r | grep '  origin/[A-Z][a-z]' | sed 's/  origin\//"/' | sed -z 's/\r//g; s/\n/", /g' | sed 's/, $//g' >> ./branch_list.json
+          echo ']' >> ./branch_list.json
+      - name: Output target branches
+        id: output_target_branches
+        run: echo target_branches=$(<./branch_list.json) >> $GITHUB_OUTPUT
\ No newline at end of file