diff --git a/package.json b/package.json
index 2749b8c..4b3b88a 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@angular/router-deprecated": "2.0.0-rc.2",
     "@angular/upgrade": "^2.4.3",
     "angular-in-memory-web-api": "^0.2.4",
-    "bootstrap": "^3.3.6",
+    "bootstrap": "^4.3.1",
     "crypto": "^0.0.3",
     "reflect-metadata": "^0.1.9",
     "rxjs": "^5.0.3",