diff --git a/trainer/package-lock.json b/trainer/package-lock.json
index 3504056..25206df 100644
--- a/trainer/package-lock.json
+++ b/trainer/package-lock.json
@@ -788,6 +788,7 @@
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "3.2.2",
         "longest": "1.0.1",
@@ -1412,9 +1413,9 @@
       }
     },
     "bootstrap": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.0.0.tgz",
-      "integrity": "sha1-zrA4QsFF/MG5tOFdoqBWVrpoRpo="
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
+      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag=="
     },
     "brace-expansion": {
       "version": "1.1.8",
@@ -5678,7 +5679,8 @@
           "version": "4.2.1",
           "resolved": "https://registry.npmjs.org/hoek/-/hoek-4.2.1.tgz",
           "integrity": "sha512-QLg82fGkfnJ/4iy1xZ81/9SIJiq1NGFUMGs6ParyjBZr6jW2Ufj/snDqTHixNlHdPNwN2RLVD0Pi3igeK9+JfA==",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "http-signature": {
           "version": "1.2.0",
@@ -5928,7 +5930,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.3.1",
diff --git a/trainer/package.json b/trainer/package.json
index d1996cd..6c1e9bd 100644
--- a/trainer/package.json
+++ b/trainer/package.json
@@ -21,7 +21,7 @@
     "@angular/platform-browser": "6.0.0",
     "@angular/platform-browser-dynamic": "6.0.0",
     "@angular/router": "6.0.0",
-    "bootstrap": "~4.0.0",
+    "bootstrap": "~4.3.1",
     "core-js": "~2.4.1",
     "ionicons": "^3.0.0",
     "ngx-modialog": "~5.0.0",