diff --git a/package.json b/package.json
index 532e057b..1d46fabc 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
   },
   "devDependencies": {
     "ajv": "^4.11.2",
-    "bootstrap": "^3.3.7",
+    "bootstrap": "^4.6.0",
     "chai": "^3.5.0",
     "chai-webdriver": "^1.2.0",
     "coffee-loader": "^0.7.2",