diff --git a/package-lock.json b/package-lock.json
index d787d6f..0dd4ee4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14226,18 +14226,18 @@
       "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ=="
     },
     "tslint": {
-      "version": "5.15.0",
-      "resolved": "https://registry.npmjs.org/tslint/-/tslint-5.15.0.tgz",
-      "integrity": "sha512-6bIEujKR21/3nyeoX2uBnE8s+tMXCQXhqMmaIPJpHmXJoBJPTLcI7/VHRtUwMhnLVdwLqqY3zmd8Dxqa5CVdJA==",
+      "version": "5.20.0",
+      "resolved": "https://registry.npmjs.org/tslint/-/tslint-5.20.0.tgz",
+      "integrity": "sha512-2vqIvkMHbnx8acMogAERQ/IuINOq6DFqgF8/VDvhEkBqQh/x6SP0Y+OHnKth9/ZcHQSroOZwUQSN18v8KKF0/g==",
       "dev": true,
       "requires": {
-        "babel-code-frame": "^6.22.0",
+        "@babel/code-frame": "^7.0.0",
         "builtin-modules": "^1.1.1",
         "chalk": "^2.3.0",
         "commander": "^2.12.1",
-        "diff": "^3.2.0",
+        "diff": "^4.0.1",
         "glob": "^7.1.1",
-        "js-yaml": "^3.13.0",
+        "js-yaml": "^3.13.1",
         "minimatch": "^3.0.4",
         "mkdirp": "^0.5.1",
         "resolve": "^1.3.2",
@@ -14246,6 +14246,12 @@
         "tsutils": "^2.29.0"
       },
       "dependencies": {
+        "diff": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.1.tgz",
+          "integrity": "sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q==",
+          "dev": true
+        },
         "semver": {
           "version": "5.7.1",
           "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
diff --git a/package.json b/package.json
index 87fcc08..17a4a65 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "karma-jasmine-html-reporter": "^1.4.0",
     "protractor": "~5.4.0",
     "ts-node": "~7.0.0",
-    "tslint": "~5.15.0",
+    "tslint": "~5.20.0",
     "typescript": "~3.5.3",
     "@angular-devkit/architect": "<0.900 || ^0.900.0-0 || ^9.0.0-0",
     "firebase-tools": "^6.10.0",