diff --git a/package-lock.json b/package-lock.json
index 5796236e..eae09c33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2030,13 +2030,10 @@
       "dev": true
     },
     "flat": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/flat/-/flat-2.0.2.tgz",
-      "integrity": "sha512-b/cdFAr468cVs8XoG62dbGf9YegchdgEPX6sP7rppE0a4+RZF19kseTiDKGA1rIr3hOvOD0QIlSmaFlOlT0gfA==",
-      "dev": true,
-      "requires": {
-        "is-buffer": "~1.1.2"
-      }
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/flat/-/flat-5.0.1.tgz",
+      "integrity": "sha512-DUYDWLlMhV9qvhjbgmhDQ3ZycXmoOKzrj4KN0+5BEat5SqTlXcXzxNgwiSN1UQHA5Z0BsgYYPelhQHVhpfqaVA==",
+      "dev": true
     },
     "flat-cache": {
       "version": "1.3.4",
@@ -3248,12 +3245,6 @@
         "has-tostringtag": "^1.0.0"
       }
     },
-    "is-buffer": {
-      "version": "1.1.6",
-      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
-      "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==",
-      "dev": true
-    },
     "is-callable": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.2.4.tgz",
diff --git a/package.json b/package.json
index 0c266a60..a74f99cf 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "license": "MIT",
   "devDependencies": {
     "autoprefixer": "^6.3.6",
-    "flat": "^2.0.0",
+    "flat": "^5.0.1",
     "grunt": "^1.0.1",
     "grunt-browser-sync": "^2.2.0",
     "grunt-contrib-clean": "^1.0.0",