diff --git a/packages/openapi-fetch/package.json b/packages/openapi-fetch/package.json
index 003b23d78..48c39c7cb 100644
--- a/packages/openapi-fetch/package.json
+++ b/packages/openapi-fetch/package.json
@@ -82,7 +82,7 @@
     "openapi-typescript-fetch": "^2.0.0",
     "superagent": "^10.1.1",
     "typescript": "^5.7.2",
-    "undici": "^6.21.0",
+    "undici": "^6.21.1",
     "vite": "^6.0.7"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8c5b4a5f8..4091df50f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -103,8 +103,8 @@ importers:
         specifier: ^5.7.2
         version: 5.7.2
       undici:
-        specifier: ^6.21.0
-        version: 6.21.0
+        specifier: ^6.21.1
+        version: 6.21.1
       vite:
         specifier: ^6.0.7
         version: 6.0.7(@types/node@22.10.5)(jiti@2.4.2)(yaml@2.5.1)
@@ -4289,8 +4289,8 @@ packages:
   undici-types@6.20.0:
     resolution: {integrity: sha512-Ny6QZ2Nju20vw1SRHe3d9jVu6gJ+4e3+MMpqu7pqE5HT6WsTSlce++GQmK5UXS8mzV8DSYHrQH+Xrf2jVcuKNg==}
 
-  undici@6.21.0:
-    resolution: {integrity: sha512-BUgJXc752Kou3oOIuU1i+yZZypyZRqNPW0vqoMPl8VaoalSfeR0D8/t4iAS3yirs79SSMTxTag+ZC86uswv+Cw==}
+  undici@6.21.1:
+    resolution: {integrity: sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ==}
     engines: {node: '>=18.17'}
 
   unicode-emoji-modifier-base@1.0.0:
@@ -8791,7 +8791,7 @@ snapshots:
 
   undici-types@6.20.0: {}
 
-  undici@6.21.0: {}
+  undici@6.21.1: {}
 
   unicode-emoji-modifier-base@1.0.0: {}