diff --git a/package-lock.json b/package-lock.json
index b78890d..0fb62b3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,7 +25,7 @@
 				"lint-staged": "15.5.2",
 				"p-event": "6.0.1",
 				"prettier": "3.6.2",
-				"sinon": "20.0.0",
+				"sinon": "21.0.0",
 				"typescript": "5.9.3",
 				"typescript-eslint": "8.45.0",
 				"vinyl": "3.0.1"
@@ -3928,9 +3928,9 @@
 			}
 		},
 		"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 8b5dd9f..249047e 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
 		"lint-staged": "15.5.2",
 		"p-event": "6.0.1",
 		"prettier": "3.6.2",
-		"sinon": "20.0.0",
+		"sinon": "21.0.0",
 		"typescript": "5.9.3",
 		"typescript-eslint": "8.45.0",
 		"vinyl": "3.0.1"