diff --git a/.github/workflows/copies.yml b/.github/workflows/copies.yml
new file mode 100644
index 0000000..1674cec
--- /dev/null
+++ b/.github/workflows/copies.yml
@@ -0,0 +1,18 @@
+name: copies
+on:
+  push:
+    branches:
+      - '**'
+jobs:
+  sass:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - run: cp TangerineUI.css mastodon/app/javascript/styles/tangerineui/layout-single-column.scss
+      - run: cp TangerineUI-purple.css mastodon/app/javascript/styles/tangerineui-purple/layout-single-column.scss
+      - uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: Copy CSS files to installation folder
+          file_pattern: 'mastodon/'