diff --git a/packages/plugin-hardhat/package.json b/packages/plugin-hardhat/package.json
index f0540e815..d93c39cde 100644
--- a/packages/plugin-hardhat/package.json
+++ b/packages/plugin-hardhat/package.json
@@ -44,7 +44,7 @@
     "debug": "^4.1.1",
     "ethereumjs-util": "^7.1.5",
     "proper-lockfile": "^4.1.1",
-    "undici": "^5.28.2"
+    "undici": "^6.0.0"
   },
   "peerDependencies": {
     "@nomicfoundation/hardhat-ethers": "^3.0.0",
diff --git a/yarn.lock b/yarn.lock
index 4109786f0..cdfe74990 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8831,13 +8831,20 @@ undici-types@~5.26.4:
   resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.26.5.tgz#bcd539893d00b56e964fd2657a4866b221a65617"
   integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
 
-undici@^5.14.0, undici@^5.28.2:
+undici@^5.14.0:
   version "5.28.3"
   resolved "https://registry.yarnpkg.com/undici/-/undici-5.28.3.tgz#a731e0eff2c3fcfd41c1169a869062be222d1e5b"
   integrity sha512-3ItfzbrhDlINjaP0duwnNsKpDQk3acHI3gVJ1z4fmwMK31k5G9OVIAMLSIaP6w4FaGkaAkN6zaQO9LUvZ1t7VA==
   dependencies:
     "@fastify/busboy" "^2.0.0"
 
+undici@^6.0.0:
+  version "6.6.1"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-6.6.1.tgz#a22b93f8f67fb70b6c38a1702f37f309b5e4658b"
+  integrity sha512-J0GaEp0ztu/grIE2Uq57AbK6TRb+bWbOlxu0POCzhFKA6LKbwSAev+hDQaQcgUUA9CPs8Ky+cauzTHnQrtAQEA==
+  dependencies:
+    "@fastify/busboy" "^2.0.0"
+
 unfetch@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/unfetch/-/unfetch-4.2.0.tgz#7e21b0ef7d363d8d9af0fb929a5555f6ef97a3be"