diff --git a/package.json b/package.json
index 928ad960..50088dd6 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "typedoc-plugin-mdn-links": "^3.3.4",
     "typedoc-plugin-merge-modules": "^5.1.0",
     "typescript": "~5.4.5",
-    "undici-types": "^5.28.4",
+    "undici-types": "^6.9.0",
     "zlib-sync": "^0.1.9"
   },
   "dependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index dfdc21d0..f6ff240c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -97,8 +97,8 @@ importers:
         specifier: ~5.4.5
         version: 5.4.5
       undici-types:
-        specifier: ^5.28.4
-        version: 5.28.4
+        specifier: ^6.9.0
+        version: 6.9.0
       zlib-sync:
         specifier: ^0.1.9
         version: 0.1.9
@@ -1598,8 +1598,8 @@ packages:
   undici-types@5.26.5:
     resolution: {integrity: sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==}
 
-  undici-types@5.28.4:
-    resolution: {integrity: sha512-3OeMF5Lyowe8VW0skf5qaIE7Or3yS9LS7fvMUI0gg4YxpIBVg0L8BxCmROw2CcYhSkpR68Epz7CGc8MPj94Uww==}
+  undici-types@6.9.0:
+    resolution: {integrity: sha512-SwFgFJtloS7+CcTkjRdpwjCA0RWtZXZH26DIcy+cn6+7AfciCBi2oWYImlaBMvgq5b5DbhFe37ebaUphbmi9QA==}
 
   unique-filename@4.0.0:
     resolution: {integrity: sha512-XSnEewXmQ+veP7xX2dS5Q4yZAvO40cBN2MWkJ7D/6sW4Dg6wYBNwM1Vrnz1FhH5AdeLIlUXRI9e28z1YZi71NQ==}
@@ -3391,7 +3391,7 @@ snapshots:
 
   undici-types@5.26.5: {}
 
-  undici-types@5.28.4: {}
+  undici-types@6.9.0: {}
 
   unique-filename@4.0.0:
     dependencies: