diff --git a/package-lock.json b/package-lock.json
index 725b0b2..b066baa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3303,6 +3303,11 @@
         "preprocess": "2.1.x"
       },
       "dependencies": {
+        "lodash": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
+          "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4="
+        },
         "map-stream": {
           "version": "0.1.0",
           "resolved": "https://registry.npmjs.org/map-stream/-/map-stream-0.1.0.tgz",
@@ -4065,9 +4070,9 @@
       }
     },
     "lodash": {
-      "version": "2.4.2",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
-      "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "lodash._basecopy": {
       "version": "3.0.1",
diff --git a/package.json b/package.json
index 8653f7f..56b8883 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "gulp-preprocess": "^1.2.0",
     "gulp-rename": "^1.2.0",
     "gulp-uglify": "^1.1.0",
-    "lodash": "^2.4.1",
+    "lodash": "^4.17.21",
     "q": "^1.1.2",
     "stream-series": "^0.1.1"
   },