diff --git a/package.json b/package.json
index 5be0a41..e089aad 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
     "fill-range": "^7.0.1",
     "finalhandler": "^1.1.2",
     "find-up": "^3.0.0",
-    "flat": "^4.1.0",
+    "flat": "^5.0.1",
     "forwarded": "^0.1.2",
     "fresh": "^0.5.2",
     "fs.realpath": "^1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 9659b82..c450587 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -582,6 +582,11 @@ flat@^4.1.0:
   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==
+
 follow-redirects@1.5.10:
   version "1.5.10"
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.5.10.tgz#7b7a9f9aea2fdff36786a94ff643ed07f4ff5e2a"