diff --git a/package-lock.json b/package-lock.json
index 5f36999..05956cd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,9 +5,9 @@
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-            "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
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+            "version": "7.5.5",
+            "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.5.5.tgz",
+            "integrity": "sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==",
             "dev": true,
             "requires": {
                 "@babel/highlight": "^7.0.0"
@@ -200,9 +200,9 @@
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         "commander": {
-            "version": "2.20.0",
-            "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
-            "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==",
+            "version": "2.20.3",
+            "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+            "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
             "dev": true
         },
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@@ -285,9 +285,9 @@
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-            "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
-            "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
+            "version": "2.0.3",
+            "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.3.tgz",
+            "integrity": "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==",
             "dev": true
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@@ -715,9 +715,9 @@
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-            "version": "1.11.1",
-            "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
-            "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
+            "version": "1.12.0",
+            "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.12.0.tgz",
+            "integrity": "sha512-B/dOmuoAik5bKcD6s6nXDCjzUKnaDvdkRyAk6rsmsKLipWj4797iothd7jmmUhWTfinVMU+wc56rYKsit2Qy4w==",
             "dev": true,
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@@ -814,16 +814,16 @@
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-            "resolved": "https://registry.npmjs.org/tslint/-/tslint-5.18.0.tgz",
-            "integrity": "sha512-Q3kXkuDEijQ37nXZZLKErssQVnwCV/+23gFEMROi8IlbaBG6tXqLPQJ5Wjcyt/yHPKBC+hD5SzuGaMora+ZS6w==",
+            "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",
@@ -832,6 +832,14 @@
                 "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 0a90f0f..a836b76 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "devDependencies": {
         "@types/mocha": "^5.2.7",
         "@types/node": "^12.6.2",
-        "tslint": "^5.18.0",
+        "tslint": "^5.20.0",
         "typescript": "^3.5.3",
         "vscode": "^1.1.35"
     },