diff --git a/package-lock.json b/package-lock.json
index 5d16400..221c35a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -446,11 +446,18 @@
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+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
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       "requires": {
-        "tslib": "1.9.3"
+        "tslib": "^2.0.0"
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+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
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+        }
       }
     },
     "@angular/forms": {
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+      "dev": true,
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@@ -3008,12 +3016,14 @@
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+      "integrity": "sha512-DCRfO/4nQ+89p/RK43i8Ezd41EqdGIU4ld7nGF8OQ14oc/we5rEntLCUa7+jrn3nn83BosfwZA0wb4pon2o8iQ==",
+      "dev": true
     },
     "ajv-keywords": {
       "version": "3.4.0",
       "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.4.0.tgz",
-      "integrity": "sha512-aUjdRFISbuFOl0EIZc+9e4FfZp0bDZgAdOOf30bJmw8VM9v84SHyVyxDfbWxpGYbdZD/9XoKxfHVNmxPkhwyGw=="
+      "integrity": "sha512-aUjdRFISbuFOl0EIZc+9e4FfZp0bDZgAdOOf30bJmw8VM9v84SHyVyxDfbWxpGYbdZD/9XoKxfHVNmxPkhwyGw==",
+      "dev": true
     },
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@@ -4074,7 +4084,8 @@
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-      "integrity": "sha512-vyL2OymJxmarO8gxMr0mhChsO9QGwhynfuu4+MHTAW6czfq9humCB7rKpUjDd9YUiDPU4mzpyupFSvOClAwbmQ=="
+      "integrity": "sha512-vyL2OymJxmarO8gxMr0mhChsO9QGwhynfuu4+MHTAW6czfq9humCB7rKpUjDd9YUiDPU4mzpyupFSvOClAwbmQ==",
+      "dev": true
     },
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@@ -6002,7 +6013,8 @@
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-      "integrity": "sha1-TapNnbAPmBmIDHn6RXrlsJof04k="
+      "integrity": "sha1-TapNnbAPmBmIDHn6RXrlsJof04k=",
+      "dev": true
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@@ -6658,7 +6670,8 @@
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-      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk="
+      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
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@@ -6677,7 +6690,8 @@
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-      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
+      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I=",
+      "dev": true
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@@ -7076,7 +7090,8 @@
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-          "dev": true
+          "dev": true,
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@@ -7097,12 +7112,14 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -7117,17 +7134,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
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         "core-util-is": {
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@@ -7244,7 +7264,8 @@
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           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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@@ -7256,6 +7277,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -7270,6 +7292,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -7277,12 +7300,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "yallist": "3.0.3"
@@ -7301,6 +7326,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -7381,7 +7407,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -7393,6 +7420,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -7478,7 +7506,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -7514,6 +7543,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -7533,6 +7563,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -7576,12 +7607,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -9686,7 +9719,8 @@
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+      "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
+      "dev": true
     },
     "json-stringify-safe": {
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@@ -9704,6 +9738,7 @@
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       "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
       "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
+      "dev": true,
       "requires": {
         "minimist": "1.2.0"
       }
@@ -10018,6 +10053,7 @@
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-1.2.3.tgz",
       "integrity": "sha512-fkpz8ejdnEMG3s37wGL07iSBDg99O9D5yflE9RGNH3hRdx9SOwYfnGYdZOUIZitN8E+E2vkq3MUMYMvPYl5ZZA==",
+      "dev": true,
       "requires": {
         "big.js": "5.2.2",
         "emojis-list": "2.1.0",
@@ -10569,7 +10605,8 @@
     "minimist": {
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       "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
+      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
+      "dev": true
     },
     "minipass": {
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@@ -12461,7 +12498,8 @@
     "punycode": {
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       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
+      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
+      "dev": true
     },
     "q": {
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@@ -12582,6 +12620,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/raw-loader/-/raw-loader-1.0.0.tgz",
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+      "dev": true,
       "requires": {
         "loader-utils": "1.2.3",
         "schema-utils": "1.0.0"
@@ -13703,6 +13742,7 @@
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+      "dev": true,
       "requires": {
         "ajv": "6.9.1",
         "ajv-errors": "1.0.1",
@@ -15805,6 +15845,7 @@
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+      "dev": true,
       "requires": {
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       }
diff --git a/package.json b/package.json
index 401463b..07b89e9 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@angular/cdk": "~7.3.7",
     "@angular/common": "~7.2.0",
     "@angular/compiler": "~7.2.0",
-    "@angular/core": "~7.2.0",
+    "@angular/core": "~11.0.5",
     "@angular/forms": "~7.2.0",
     "@angular/material": "^7.3.7",
     "@angular/platform-browser": "~7.2.0",