diff --git a/package.json b/package.json
index d372f3f..41f37dc 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "ci": "npm run typecheck && npm test && npm run compat:codegraph && npm pack --dry-run",
     "compat:codegraph": "codegraph --version",
     "local-release": "changeset version && changeset publish",
-    "publish-packages": "npm publish --access public --provenance",
+    "publish-packages": "node -e \"const {execSync}=require('node:child_process'); const p=require('./package.json'); const spec=p.name+'@'+p.version; try { execSync('npm view '+spec+' version', {stdio:'ignore'}); console.log(spec+' already published; skipping.'); } catch { execSync('npm publish --access public --provenance', {stdio:'inherit'}); }\"",
     "prepack": "npm run typecheck && npm test",
     "prepublishOnly": "npm run ci",
     "typecheck": "tsc --noEmit",