diff --git a/doc/package-lock.json b/doc/package-lock.json
index c0063d1..80e9fb3 100644
--- a/doc/package-lock.json
+++ b/doc/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "bootstrap": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.1.1.tgz",
-      "integrity": "sha512-SpiDSOcbg4J/PjVSt4ny5eY6j74VbVSjROY4Fb/WIUXBV9cnb5luyR4KnPvNoXuGnBK1T+nJIWqRsvU3yP8Mcg=="
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
+      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag=="
     },
     "sass": {
       "version": "1.3.2",