diff --git a/package-lock.json b/package-lock.json
index dfa6231..9b25103 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12351,9 +12351,9 @@
       "dev": true
     },
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-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.0.0.tgz",
-      "integrity": "sha512-lTqkx847PI7xEDYJntxZH89L2/aXInsyF2luSafe/+0fHOMjlBNXdH6th7f70qxLDhul7KZK0zC8V5ZIyHl0/g=="
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.2.0.tgz",
+      "integrity": "sha512-gS9GVHRU+RGn5KQM2rllAlR3dU6m7AcpJKdtH8gFvQiC4Otgk98XnmMU+nZenHt/+VhnBPWwgrJsyrdcw6i23w=="
     },
     "tslint": {
       "version": "6.1.2",
@@ -12909,6 +12909,7 @@
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           "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
           "dev": true,
+          "optional": true,
           "requires": {
             "arr-flatten": "^1.1.0",
             "array-unique": "^0.3.2",
@@ -12927,6 +12928,7 @@
               "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
               "dev": true,
+              "optional": true,
               "requires": {
                 "is-extendable": "^0.1.0"
               }
@@ -12959,6 +12961,7 @@
           "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-4.0.0.tgz",
           "integrity": "sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=",
           "dev": true,
+          "optional": true,
           "requires": {
             "extend-shallow": "^2.0.1",
             "is-number": "^3.0.0",
@@ -12971,6 +12974,7 @@
               "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
               "dev": true,
+              "optional": true,
               "requires": {
                 "is-extendable": "^0.1.0"
               }
@@ -13022,6 +13026,7 @@
           "resolved": "https://registry.npmjs.org/is-number/-/is-number-3.0.0.tgz",
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2"
           },
@@ -13031,6 +13036,7 @@
               "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
               "dev": true,
+              "optional": true,
               "requires": {
                 "is-buffer": "^1.1.5"
               }
@@ -13042,6 +13048,7 @@
           "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
           "integrity": "sha512-MWikgl9n9M3w+bpsY3He8L+w9eF9338xRl8IAO5viDizwSzziFEyUzo2xrrloB64ADbTf8uA8vRqqttDTOmccg==",
           "dev": true,
+          "optional": true,
           "requires": {
             "arr-diff": "^4.0.0",
             "array-unique": "^0.3.2",
@@ -13075,6 +13082,7 @@
           "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-2.1.1.tgz",
           "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-number": "^3.0.0",
             "repeat-string": "^1.6.1"
diff --git a/package.json b/package.json
index 3ac949d..3b6e307 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "@ngx-translate/core": "^11.0.1",
     "@ngx-translate/http-loader": "^4.0.0",
     "rxjs": "~6.6.2",
-    "tslib": "^2.0.0",
+    "tslib": "^2.2.0",
     "zone.js": "~0.10.3"
   },
   "devDependencies": {