diff --git a/package-lock.json b/package-lock.json
index f022317d..6f4d3165 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,6 @@
       "devDependencies": {
         "@biomejs/biome": "^2.6.4",
         "@changesets/cli": "^3.0.3",
-        "@types/flat": "^5.0.5",
         "@types/js-yaml": "^4.0.9",
         "@types/markup-js": "^1.5.0",
         "@types/node": "^24.19.2",
@@ -893,13 +892,6 @@
       "integrity": "sha512-3xSjTp3v03X/lSQLkczaN9UIEwJMoMCA1+Nb5HfbJEQWogdeQIyVtTvxPXDQjZ5zws8rFQfVfRdz03ARihPJgw==",
       "license": "MIT"
     },
-    "node_modules/@types/flat": {
-      "version": "5.0.5",
-      "resolved": "https://registry.npmjs.org/@types/flat/-/flat-5.0.5.tgz",
-      "integrity": "sha512-nPLljZQKSnac53KDUDzuzdRfGI0TDb5qPrb+SrQyN3MtdQrOnGsKniHN1iYZsJEBIVQve94Y6gNz22sgISZq+Q==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/@types/js-yaml": {
       "version": "4.0.9",
       "resolved": "https://registry.npmjs.org/@types/js-yaml/-/js-yaml-4.0.9.tgz",
diff --git a/package.json b/package.json
index 60fa613a..04b119e1 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,6 @@
   "devDependencies": {
     "@biomejs/biome": "^2.6.4",
     "@changesets/cli": "^3.0.3",
-    "@types/flat": "^5.0.5",
     "@types/js-yaml": "^4.0.9",
     "@types/markup-js": "^1.5.0",
     "@types/node": "^24.19.2",