diff --git a/.forgejo/workflows/acorn.yml b/.forgejo/workflows/acorn.yml
new file mode 100644
index 0000000..573fd1e
--- /dev/null
+++ b/.forgejo/workflows/acorn.yml
@@ -0,0 +1,8 @@
+name: Check syntax with acorn
+on: [push]
+jobs:
+  acorn:
+    runs-on: debian-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: acorn --silent script.user.js
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