diff --git a/.github/workflows/publish-npm.yml b/.github/workflows/publish-npm.yml
index 800d34d..e9f9b49 100644
--- a/.github/workflows/publish-npm.yml
+++ b/.github/workflows/publish-npm.yml
@@ -15,9 +15,12 @@ jobs:
         with:
           node-version: 16
           registry-url: https://npm.pkg.github.com/
+      # Include a Protobuf and gRPC code generator.
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v3
       - run: npm ci
         working-directory: ./packages/runner-ts
-      - run: npm build
+      - run: npm run build
         working-directory: ./packages/runner-ts
       - run: npm publish
         env: