diff --git a/package-lock.json b/package-lock.json
index c2bd688f..7efa1cfe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9313,16 +9313,16 @@
       "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ=="
     },
     "tslint": {
-      "version": "5.17.0",
-      "resolved": "https://registry.npmjs.org/tslint/-/tslint-5.17.0.tgz",
-      "integrity": "sha512-pflx87WfVoYepTet3xLfDOLDm9Jqi61UXIKePOuca0qoAZyrGWonDG9VTbji58Fy+8gciUn8Bt7y69+KEVjc/w==",
+      "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": "^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": "^3.13.1",
         "minimatch": "^3.0.4",
@@ -9331,6 +9331,14 @@
         "semver": "^5.3.0",
         "tslib": "^1.8.0",
         "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
+        }
       }
     },
     "tsutils": {
diff --git a/package.json b/package.json
index ed17a606..613e74ba 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "karma-jasmine-html-reporter": "^1.4.2",
     "protractor": "~5.4.0",
     "ts-node": "~7.0.0",
-    "tslint": "^5.17.0",
+    "tslint": "^5.20.0",
     "typescript": "~3.4.5"
   }
 }