diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8bb6580f..3c57ded8 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -120,7 +120,3 @@ jobs:
           MYSQL_PORT: ${{ job.services.mysql.ports[3306] }}
         working-directory: redmine
         run: bundle exec rake redmine:plugins:migrate NAME=additionals VERSION=0
-
-      - name: Run build gem file
-        working-directory: redmine/plugins/additionals
-        run: gem build additionals.gemspec