diff --git a/package-lock.json b/package-lock.json
index 8fdc462..082011a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -324,7 +324,8 @@
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+      "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.9.0.tgz",
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@@ -4272,7 +4273,8 @@
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-          "resolved": ""
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
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@@ -4363,13 +4365,13 @@
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-          "integrity": "sha512-pRmzw/XUcwXGpD9aI9q/0XOwLNygjETJ8y0ao0wdqprrzDa4YnxLcz7fQRZr8voh8V10kGhABbNcHVk5wHgWwg==",
+          "version": "4.0.5",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.5.tgz",
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-            "braces": "^3.0.1",
-            "picomatch": "^2.2.3"
+            "braces": "^3.0.2",
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@@ -4382,13 +4384,14 @@
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           "dev": true,
           "requires": {
-            "is-core-module": "^2.2.0",
-            "path-parse": "^1.0.6"
+            "is-core-module": "^2.8.1",
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@@ -5322,9 +5325,9 @@
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+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
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@@ -5868,7 +5871,8 @@
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           "version": "6.0.2",
-          "resolved": ""
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
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@@ -6182,6 +6186,12 @@
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       "dev": true
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+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
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+      "dev": true
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@@ -6485,13 +6495,21 @@
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-      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.5.tgz",
-      "integrity": "sha512-g+dpmgn+XBneLmXXo+sGlW5xQEt4ErkS3mgeN2GFbremYeMBSJKr9Wf2KJplQVaiPY/f7FN6atosWYNm9ovrYg==",
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       "dev": true,
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-        "sprintf-js": "^1.0.3",
+        "sprintf-js": "^1.1.1",
         "util-deprecate": "^1.0.2"
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+          "dev": true
+        }
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diff --git a/package.json b/package.json
index 7246eed..2d4d7e4 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "license": "GPL",
   "private": true,
   "devDependencies": {
-    "grunt": "^1.4.1",
+    "grunt": "^1.5.3",
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     "grunt-contrib-compress": "~1.3.0",
     "grunt-contrib-concat": "^1.0.1",