diff --git a/package.json b/package.json
index 6eac1e1..c1dd395 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "bootstrap": "3",
+    "bootstrap": "^4.1.0",
     "dompurify": "^1.0.3",
     "markdown-it": "8.4.0",
     "react": "16.2.0",