diff --git a/3-31-20-angular-problem/services-assignment/package-lock.json b/3-31-20-angular-problem/services-assignment/package-lock.json
index 15934e4..9cfebed 100644
--- a/3-31-20-angular-problem/services-assignment/package-lock.json
+++ b/3-31-20-angular-problem/services-assignment/package-lock.json
@@ -2659,9 +2659,9 @@
       "dev": true
     },
     "bootstrap": {
-      "version": "3.3.7",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-3.3.7.tgz",
-      "integrity": "sha1-WjiTlFSfIzMIdaOxUGVldPip63E="
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-3.4.1.tgz",
+      "integrity": "sha512-yN5oZVmRCwe5aKwzRj6736nSmKDX7pLYwsXiCj/EYmo16hODaBiT4En5btW/jhBF/seV+XMx3aYwukYC3A49DA=="
     },
     "brace-expansion": {
       "version": "1.1.11",
diff --git a/3-31-20-angular-problem/services-assignment/package.json b/3-31-20-angular-problem/services-assignment/package.json
index f922340..6d856da 100644
--- a/3-31-20-angular-problem/services-assignment/package.json
+++ b/3-31-20-angular-problem/services-assignment/package.json
@@ -19,7 +19,7 @@
     "@angular/platform-browser": "^9.0.0",
     "@angular/platform-browser-dynamic": "^9.0.0",
     "@angular/router": "^9.0.0",
-    "bootstrap": "3.3.7",
+    "bootstrap": "3.4.1",
     "core-js": "^3.1.2",
     "rxjs": "^6.0.0",
     "rxjs-compat": "^6.0.0",