diff --git a/contrib/sample-lambda-app/package.json b/contrib/sample-lambda-app/package.json
index 9a41b6a..58c1b1d 100644
--- a/contrib/sample-lambda-app/package.json
+++ b/contrib/sample-lambda-app/package.json
@@ -23,6 +23,6 @@
     "aws-sigv4-fetch": "^4.0.1",
     "jest": "^29.7.0",
     "ts-jest": "^29.2.5",
-    "undici": "^6.20.1"
+    "undici": "^6.21.1"
   }
 }
diff --git a/contrib/sample-lambda-app/pnpm-lock.yaml b/contrib/sample-lambda-app/pnpm-lock.yaml
index f04c8f6..6fcd964 100644
--- a/contrib/sample-lambda-app/pnpm-lock.yaml
+++ b/contrib/sample-lambda-app/pnpm-lock.yaml
@@ -55,8 +55,8 @@ importers:
         specifier: ^29.2.5
         version: 29.2.5(@babel/core@7.26.0)(@jest/transform@29.7.0)(@jest/types@29.6.3)(babel-jest@29.7.0(@babel/core@7.26.0))(jest@29.7.0(@types/node@22.9.0)(ts-node@10.9.2(@types/node@22.9.0)(typescript@5.6.3)))(typescript@5.6.3)
       undici:
-        specifier: ^6.20.1
-        version: 6.20.1
+        specifier: ^6.21.1
+        version: 6.21.1
 
 packages:
 
@@ -893,7 +893,7 @@ packages:
     resolution: {integrity: sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==}
 
   concat-map@0.0.1:
-    resolution: {integrity: sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=}
+    resolution: {integrity: sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==}
 
   constructs@10.4.2:
     resolution: {integrity: sha512-wsNxBlAott2qg8Zv87q3eYZYgheb9lchtBfjHzzLHtXbttwSrHPs1NNQbBrmbb1YZvYg2+Vh0Dor76w4mFxJkA==}
@@ -1596,8 +1596,8 @@ packages:
   undici-types@6.19.8:
     resolution: {integrity: sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==}
 
-  undici@6.20.1:
-    resolution: {integrity: sha512-AjQF1QsmqfJys+LXfGTNum+qw4S88CojRInG/6t31W/1fk6G59s92bnAvGz5Cmur+kQv2SURXEvvudLmbrE8QA==}
+  undici@6.21.1:
+    resolution: {integrity: sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ==}
     engines: {node: '>=18.17'}
 
   update-browserslist-db@1.1.1:
@@ -3835,7 +3835,7 @@ snapshots:
 
   undici-types@6.19.8: {}
 
-  undici@6.20.1: {}
+  undici@6.21.1: {}
 
   update-browserslist-db@1.1.1(browserslist@4.24.2):
     dependencies: