diff --git a/example_module_mailtheme/package-lock.json b/example_module_mailtheme/package-lock.json
index a57cbbe..36dafb8 100644
--- a/example_module_mailtheme/package-lock.json
+++ b/example_module_mailtheme/package-lock.json
@@ -1777,9 +1777,9 @@
       }
     },
     "bootstrap": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
-      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag=="
+      "version": "5.3.3",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.3.3.tgz",
+      "integrity": "sha512-8HLCdWgyoMguSO9o+aH+iuZ+aht+mzW0u3HIMzVu7Srrpv7EBBxTnrFlSCskwdY1+EOFQSm7uMJhNQHkdPcmjg=="
     },
     "bootstrap-colorpicker": {
       "version": "3.1.2",