diff --git a/.github/workflows/javascript.yml b/.github/workflows/javascript.yml
index 967b298..d4dd99b 100644
--- a/.github/workflows/javascript.yml
+++ b/.github/workflows/javascript.yml
@@ -24,6 +24,21 @@ jobs:
         run: yarn install --frozen-lockfile
       - name: Run tests
         run: xvfb-run -a yarn test
+  prepublish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
+      - name: Use Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
+        with:
+          node-version-file: ".nvmrc"
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+      - name: Run prepublish
+        run: yarn vscode:prepublish
   format:
     runs-on: ubuntu-latest
     steps:
@@ -37,5 +52,5 @@ jobs:
           node-version-file: ".nvmrc"
       - name: Install dependencies
         run: yarn install --frozen-lockfile
-      - name: Run tests
+      - name: Run format check
         run: yarn format:check