diff --git a/package-lock.json b/package-lock.json
old mode 100755
new mode 100644
index 27079c79..c993d249
--- a/package-lock.json
+++ b/package-lock.json
@@ -1119,19 +1119,9 @@
       "dev": true
     },
     "flat": {
-      "version": "1.6.1",
-      "resolved": "https://registry.npmjs.org/flat/-/flat-1.6.1.tgz",
-      "integrity": "sha1-R2udu3DV6TQNu8A4veCEoglFkhw=",
-      "requires": {
-        "is-buffer": "~1.1.2"
-      },
-      "dependencies": {
-        "is-buffer": {
-          "version": "1.1.6",
-          "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
-          "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w=="
-        }
-      }
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/flat/-/flat-5.0.2.tgz",
+      "integrity": "sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ=="
     },
     "form-data": {
       "version": "2.5.1",
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index fb44c4e2..82fa7510
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "dasherize": "2.0.x",
     "debug": "^3.1.0",
     "depd": "^1.1.2",
-    "flat": "^1.2.1",
+    "flat": "^5.0.2",
     "immutable": "^3.8.2",
     "lodash": "^4.17.5",
     "negotiator": "github:ethanresnick/negotiator#full-parse-access",