diff --git a/app/package-lock.json b/app/package-lock.json
index 66ce6fba040..688aff31eec 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -4157,9 +4157,9 @@
       "optional": true
     },
     "bootstrap": {
-      "version": "4.6.0",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.6.0.tgz",
-      "integrity": "sha512-Io55IuQY3kydzHtbGvQya3H+KorS/M9rSNyfCGCg9WZ4pyT/lCxIlpJgG1GXW/PswzC84Tr2fBYi+7+jFVQQBw=="
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.1.1.tgz",
+      "integrity": "sha512-/jUa4sSuDZWlDLQ1gwQQR8uoYSvLJzDd8m5o6bPKh3asLAMYVZKdRCjb1joUd5WXf0WwCNzd2EjwQQhupou0dA=="
     },
     "boxen": {
       "version": "5.0.1",
diff --git a/app/package.json b/app/package.json
index 5bdbab7472e..94fe731f6cf 100644
--- a/app/package.json
+++ b/app/package.json
@@ -5,7 +5,7 @@
   "repository": "github:kopia/kopia",
   "dependencies": {
     "auto-launch": "^5.0.5",
-    "bootstrap": "^4.6.0",
+    "bootstrap": "^5.1.1",
     "electron-first-run": "^3.0.0",
     "electron-is-dev": "^2.0.0",
     "electron-log": "^4.3.5",