diff --git a/package-lock.json b/package-lock.json
index 7329872..60c8dfb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "mocha": "^11.0.0",
         "nock": "^14.0.0",
         "nyc": "^17.0.0",
-        "sinon": "^20.0.0",
+        "sinon": "^21.0.0",
         "sinon-chai": "^4.0.0"
       }
     },
@@ -2890,9 +2890,9 @@
       }
     },
     "node_modules/sinon": {
-      "version": "20.0.0",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-20.0.0.tgz",
-      "integrity": "sha512-+FXOAbdnj94AQIxH0w1v8gzNxkawVvNqE3jUzRLptR71Oykeu2RrQXXl/VQjKay+Qnh73fDt/oDfMo6xMeDQbQ==",
+      "version": "21.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-21.0.0.tgz",
+      "integrity": "sha512-TOgRcwFPbfGtpqvZw+hyqJDvqfapr1qUlOizROIk4bBLjlsjlB00Pg6wMFXNtJRpu+eCZuVOaLatG7M8105kAw==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
diff --git a/package.json b/package.json
index db6153c..39ac2c9 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "mocha": "^11.0.0",
     "nock": "^14.0.0",
     "nyc": "^17.0.0",
-    "sinon": "^20.0.0",
+    "sinon": "^21.0.0",
     "sinon-chai": "^4.0.0"
   }
 }