diff --git a/.github/workflows/gem.yml b/.github/workflows/gem.yml
index ec14844fe..22957862d 100644
--- a/.github/workflows/gem.yml
+++ b/.github/workflows/gem.yml
@@ -32,21 +32,6 @@ jobs:
           node-version: ${{ matrix.node-version }}
           cache: npm
           cache-dependency-path: frontend/package-lock.json
-      # Build YAML format Swagger doc
-      - name: Build Swagger doc
-        run: bundle exec rake build:swagger
-      # Build ReDoc docs & buld the frontend assets
-      - name: Buld frontend
-        run: |
-          npm install
-          npm run docs
-          npm run build-only
-        working-directory: frontend
-      # Copy the frontend assets into lib
-      - name: Copy forntend assets
-        run: |
-          mkdir -p lib/mihari/web/public/
-          cp -r frontend/dist/* lib/mihari/web/public
       - name: Configure Git
         run: |
           git config --global user.name "${GITHUB_ACTOR}"
diff --git a/Rakefile b/Rakefile
index 724a7f3c1..d42bd553c 100644
--- a/Rakefile
+++ b/Rakefile
@@ -50,17 +50,15 @@ namespace :build do
   end
 end
 
-def ci?
-  ENV.fetch("CI", false)
-end
-
-unless ci?
-  task :build do
-    sh "cd frontend && npm install && npm run build"
-    sh "rm -rf ./lib/mihari/web/public/"
-    sh "mkdir -p ./lib/mihari/web/public/"
-    sh "cp -r frontend/dist/* ./lib/mihari/web/public"
-  end
+task :build do
+  # Build Swagger dos
+  Rake::Task["build:swagger"].invoke
+  # Build ReDocs docs & frontend assets
+  sh "cd frontend && npm install && npm run docs && npm run build-only"
+  # Copy built assets into ./lib/web/public/
+  sh "rm -rf ./lib/mihari/web/public/"
+  sh "mkdir -p ./lib/mihari/web/public/"
+  sh "cp -r frontend/dist/* ./lib/mihari/web/public"
 end
 
 # require it later enables doing pre-build step (= build the frontend app)