diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..8db044b
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,5 @@
+language: node_js
+cache: yarn
+node_js:
+  - 12
+  - 14
diff --git a/package.json b/package.json
index fc33377..9255012 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,8 @@
     "analyze:browser": "cross-env BUNDLE_ANALYZE=browser next build",
     "test": "run-s test:*",
     "test:lint": "eslint .",
-    "test:prettier": "prettier '**/*.{js,jsx,ts,tsx}' --check"
+    "test:prettier": "prettier '**/*.{js,jsx,ts,tsx}' --check",
+    "posttest": "run-s build"
   },
   "dependencies": {
     "@google-cloud/firestore": "^4.8.1",