diff --git a/package.json b/package.json
index 0901114..e75b648 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "coveralls": "^3.0.4",
     "cross-spawn": "^6.0.4",
     "delay": "^2.0.0",
-    "flat": "^2.0.1",
+    "flat": "^5.0.1",
     "fs-extra": "^5.0.0",
     "is-ip": "^2.0.0",
     "istanbul": "^0.4.4",
diff --git a/yarn.lock b/yarn.lock
index 241462e..3a37ad7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3736,18 +3736,17 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flat@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/flat/-/flat-2.0.1.tgz#70e29188a74be0c3c89409eed1fa9577907ae32f"
-  dependencies:
-    is-buffer "~1.1.2"
-
 flat@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/flat/-/flat-4.1.0.tgz#090bec8b05e39cba309747f1d588f04dbaf98db2"
   dependencies:
     is-buffer "~2.0.3"
 
+flat@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/flat/-/flat-5.0.1.tgz#ed5f357d6c9e754d1fdc392b1d570426f8e013c2"
+  integrity sha512-DUYDWLlMhV9qvhjbgmhDQ3ZycXmoOKzrj4KN0+5BEat5SqTlXcXzxNgwiSN1UQHA5Z0BsgYYPelhQHVhpfqaVA==
+
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -4607,7 +4606,7 @@ is-binary-path@^1.0.0:
   dependencies:
     binary-extensions "^1.0.0"
 
-is-buffer@^1.1.5, is-buffer@~1.1.2:
+is-buffer@^1.1.5:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"