diff --git a/package-lock.json b/package-lock.json
index 3538a324..f694ca4b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "grunt-ts",
-  "version": "6.0.0-beta.21",
+  "version": "6.0.0-beta.22",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -2671,9 +2671,9 @@
       }
     },
     "mixin-deep": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.1.tgz",
-      "integrity": "sha512-8ZItLHeEgaqEvd5lYBXfm4EZSFCX29Jb9K+lAHhDKzReKBQKj3R+7NOF6tjqYi9t4oI8VUfaWITJQm86wnXGNQ==",
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/mixin-deep/-/mixin-deep-1.3.2.tgz",
+      "integrity": "sha512-WRoDn//mXBiJ1H40rqa3vH0toePwSsGb45iInWlTySa+Uu4k3tYUSxa2v1KqAiLtvlrSzaExqS1gtk96A9zvEA==",
       "requires": {
         "for-in": "^1.0.2",
         "is-extendable": "^1.0.1"
@@ -3541,8 +3541,7 @@
         },
         "for-in": {
           "version": "1.0.2",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "foreground-child": {
           "version": "1.5.6",
@@ -4126,25 +4125,6 @@
           "bundled": true,
           "dev": true
         },
-        "mixin-deep": {
-          "version": "1.3.1",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "for-in": "^1.0.2",
-            "is-extendable": "^1.0.1"
-          },
-          "dependencies": {
-            "is-extendable": {
-              "version": "1.0.1",
-              "bundled": true,
-              "dev": true,
-              "requires": {
-                "is-plain-object": "^2.0.4"
-              }
-            }
-          }
-        },
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,