diff --git a/fixtures/flight-esm/package.json b/fixtures/flight-esm/package.json
index de711927588c..9bf9b4ab94dd 100644
--- a/fixtures/flight-esm/package.json
+++ b/fixtures/flight-esm/package.json
@@ -13,7 +13,7 @@
     "prompts": "^2.4.2",
     "react": "experimental",
     "react-dom": "experimental",
-    "undici": "^5.20.0",
+    "undici": "^6.24.0",
     "webpack-sources": "^3.2.0"
   },
   "scripts": {
diff --git a/fixtures/flight-esm/yarn.lock b/fixtures/flight-esm/yarn.lock
index 2eae2a7a934a..00795f47af61 100644
--- a/fixtures/flight-esm/yarn.lock
+++ b/fixtures/flight-esm/yarn.lock
@@ -730,12 +730,10 @@ undefsafe@^2.0.5:
   resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.5.tgz#38733b9327bdcd226db889fb723a6efd162e6e2c"
   integrity sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==
 
-undici@^5.20.0:
-  version "5.22.1"
-  resolved "https://registry.yarnpkg.com/undici/-/undici-5.22.1.tgz#877d512effef2ac8be65e695f3586922e1a57d7b"
-  integrity sha512-Ji2IJhFXZY0x/0tVBXeQwgPlLWw13GVzpsWPQ3rV50IFMMof2I55PZZxtm4P6iNq+L5znYN9nSTAq0ZyE6lSJw==
-  dependencies:
-    busboy "^1.6.0"
+undici@^6.24.0:
+  version "6.24.0"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-6.24.0.tgz#ad36b879b4882d14addc13dd641da7ed7ac7623a"
+  integrity sha512-lVLNosgqo5EkGqh5XUDhGfsMSoO8K0BAN0TyJLvwNRSl4xWGZlCVYsAIpa/OpA3TvmnM01GWcoKmc3ZWo5wKKA==
 
 unpipe@1.0.0:
   version "1.0.0"