diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 18d78ec..fa1bb2f 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -180,11 +180,18 @@
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-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.11.tgz",
-      "integrity": "sha1-Djj99PoDijwWjHKVJoLy7jch8aM=",
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
       "requires": {
-        "tslib": "1.9.3"
+        "tslib": "^2.0.0"
+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+          "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+        }
       }
     },
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@@ -447,6 +454,7 @@
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       "integrity": "sha1-mDi1wzkrliutAx5qTF4QJKvsRc4=",
       "dev": true,
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@@ -600,6 +608,7 @@
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       "integrity": "sha1-SzXClE8GKov82mZBB2A1D+nd/CE=",
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@@ -1393,7 +1402,8 @@
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-      "dev": true
+      "dev": true,
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@@ -1938,7 +1948,8 @@
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       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
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@@ -2275,6 +2286,16 @@
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         "@angular/platform-browser": "5.2.11"
+      },
+      "dependencies": {
+        "@angular/core": {
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+          "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.11.tgz",
+          "integrity": "sha512-h2vpvXNAdOqKzbVaZcHnHGMT5A8uDnizk6FgGq6SPyw9s3d+/VxZ9LJaPjUk3g2lICA7og1tUel+2YfF971MlQ==",
+          "requires": {
+            "tslib": "^1.7.1"
+          }
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@@ -2459,7 +2480,8 @@
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-      "dev": true
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-      "dev": true
+      "dev": true,
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       "integrity": "sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=",
       "dev": true,
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@@ -3586,7 +3610,8 @@
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@@ -3607,12 +3632,14 @@
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+          "dev": true,
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           "dev": true,
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@@ -3627,17 +3654,20 @@
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+          "dev": true,
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@@ -3754,7 +3784,8 @@
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-          "dev": true
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@@ -3766,6 +3797,7 @@
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@@ -3780,6 +3812,7 @@
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@@ -3787,12 +3820,14 @@
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           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "2.2.4",
           "bundled": true,
           "dev": true,
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@@ -3811,6 +3846,7 @@
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@@ -3891,7 +3927,8 @@
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           "version": "1.0.1",
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-          "dev": true
+          "dev": true,
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@@ -3903,6 +3940,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -3988,7 +4026,8 @@
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           "version": "5.1.1",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4024,6 +4063,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4043,6 +4083,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4086,12 +4127,14 @@
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           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -4100,6 +4143,7 @@
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       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
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@@ -4158,6 +4202,7 @@
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       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
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@@ -4490,7 +4535,8 @@
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       "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
-      "dev": true
+      "dev": true,
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       "integrity": "sha1-5IIb7vWyFCogJr1zkm/lN2McVAU=",
       "dev": true,
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@@ -4791,6 +4838,7 @@
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           "integrity": "sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=",
           "dev": true,
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@@ -4842,6 +4890,7 @@
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       "integrity": "sha1-rQFScUOi6Hc8+uapb1hla7UqNLI=",
       "dev": true,
+      "optional": true,
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-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -4864,6 +4914,7 @@
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       "integrity": "sha1-UVUpcPoE1yPgTFbQQXjD+SWSu8A=",
       "dev": true,
+      "optional": true,
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@@ -4874,6 +4925,7 @@
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           "integrity": "sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=",
           "dev": true,
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@@ -6174,13 +6226,15 @@
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       "integrity": "sha1-YjUag5VjrF/1vSbxL2Dpgwu3UeY=",
-      "dev": true
+      "dev": true,
+      "optional": true
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       "integrity": "sha1-UaGp50SOy9Ms2lRCFnW7IbwJPaY=",
       "dev": true,
+      "optional": true,
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@@ -6191,7 +6245,8 @@
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           "integrity": "sha1-/iZaIYrGpXz+hUkn6dBMGYJe3es=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -6199,7 +6254,8 @@
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       "integrity": "sha1-9ebgatdLeU+1tbZpiL9yjvHe2+g=",
-      "dev": true
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@@ -7098,7 +7154,8 @@
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           "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -7112,6 +7169,7 @@
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           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
+          "optional": true,
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@@ -7173,7 +7231,8 @@
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           "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
-          "dev": true
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@@ -7228,13 +7287,15 @@
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       "integrity": "sha1-ecSQihwPXzdbc/6IjamCj23JY6Q=",
-      "dev": true
+      "dev": true,
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     "nodemailer-shared": {
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       "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -7267,7 +7328,8 @@
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       "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U=",
-      "dev": true
+      "dev": true,
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@@ -7320,6 +7382,7 @@
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       "integrity": "sha1-CKfyqL9zRgR3mp76StXMcXq7lUs=",
       "dev": true,
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@@ -8018,7 +8081,8 @@
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       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -9206,13 +9270,15 @@
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       "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY=",
-      "dev": true
+      "dev": true,
+      "optional": true
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       "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
       "dev": true,
+      "optional": true,
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@@ -9444,6 +9510,7 @@
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       "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
       "dev": true,
+      "optional": true,
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@@ -9454,6 +9521,7 @@
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       "integrity": "sha1-Lq58+OKoLTRWV2FTmn+XGMVhdlk=",
       "dev": true,
+      "optional": true,
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@@ -10309,6 +10377,7 @@
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       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -10410,7 +10479,8 @@
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       "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
-      "dev": true
+      "dev": true,
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@@ -12019,6 +12089,7 @@
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       "integrity": "sha1-rgdOa9wMFKQx6ATmJFScYzsABFc=",
       "dev": true,
+      "optional": true,
       "requires": {
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diff --git a/frontend/package.json b/frontend/package.json
index 6b06ead..eafa9b4 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -16,7 +16,7 @@
     "@angular/cdk": "^6.4.1",
     "@angular/common": "^5.2.0",
     "@angular/compiler": "^5.2.0",
-    "@angular/core": "^5.2.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^5.2.0",
     "@angular/http": "^5.2.0",
     "@angular/platform-browser": "^5.2.0",