diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1a68405..8a80c5a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,6 +29,10 @@ jobs:
           paths:
             - ~/.cache/yarn
 
+      - run:
+          name: Building examples
+          command: yarn build
+
       - run:
           name: Running tests
           command: yarn test
diff --git a/examples/graphql-react-apollo/package.json b/examples/graphql-react-apollo/package.json
index b7b642e..4108034 100644
--- a/examples/graphql-react-apollo/package.json
+++ b/examples/graphql-react-apollo/package.json
@@ -22,9 +22,10 @@
     "build": "react-scripts build",
     "update": "npx msw init public",
     "cy:run": "cypress run",
-    "test": "yarn test:unit && yarn test:e2e",
+    "test": "yarn test:unit && yarn test:e2e && yarn test:build",
     "test:unit": "react-scripts test --env=jest-environment-jsdom-sixteen",
     "test:e2e": "start-server-and-test start http://localhost:3001 cy:run",
+    "test:build": "",
     "eject": "react-scripts eject"
   },
   "eslintConfig": {
diff --git a/examples/rest-react/package.json b/examples/rest-react/package.json
index a1d3870..2b7eaf2 100644
--- a/examples/rest-react/package.json
+++ b/examples/rest-react/package.json
@@ -16,9 +16,10 @@
     "build": "react-scripts build",
     "update": "npx msw init public",
     "cy:run": "cypress run",
-    "test": "yarn test:unit && yarn test:e2e",
+    "test": "yarn test:unit && yarn test:e2e && yarn test:build",
     "test:unit": "react-scripts test --env=jest-environment-jsdom-sixteen",
     "test:e2e": "start-server-and-test start http://localhost:3001 cy:run",
+    "test:build": "../../scripts/test-bundle-presence.sh build/static/js",
     "eject": "react-scripts eject"
   },
   "eslintConfig": {
diff --git a/examples/with-storybook/package.json b/examples/with-storybook/package.json
index e8b4bac..4970e40 100644
--- a/examples/with-storybook/package.json
+++ b/examples/with-storybook/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "scripts": {
     "storybook": "start-storybook -p 6006 -s public",
-    "build-storybook": "build-storybook",
+    "build": "build-storybook",
     "update": "npx msw init public",
     "test:storybook": "jest",
     "test": "start-server-and-test storybook http://localhost:6006 test:storybook"
diff --git a/package.json b/package.json
index 67304c2..07cd2b7 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
   "license": "MIT",
   "scripts": {
     "test": "lerna exec --scope=* --concurrency=1 yarn test",
+    "build": "lerna exec --scope=* --concurrency=1 yarn build",
     "update": "lerna exec --scope=* --concurrency=1 yarn update",
     "use-packed-msw": "scripts/use-packed-msw.sh"
   },
diff --git a/scripts/test-bundle-presence.sh b/scripts/test-bundle-presence.sh
new file mode 100755
index 0000000..05176b6
--- /dev/null
+++ b/scripts/test-bundle-presence.sh
@@ -0,0 +1,9 @@
+MATCH=$(grep "msw" $1/**/*.js)
+
+if [ ! -z "$MATCH" ]
+then
+  echo "Mock Service Worker is included in the production build. Please resolve that."
+  exit 1
+fi
+
+echo "Mock Servivce Worker is NOT included in the production build."