diff --git a/package-lock.json b/package-lock.json
index 2288e7b0..b456c899 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "mock-local-storage": "^1.1.24",
         "nyc": "^17.1.0",
         "sass": "^1.89.2",
-        "sinon": "^20.0.0"
+        "sinon": "^21.0.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -4779,9 +4779,9 @@
       ]
     },
     "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": {
@@ -8935,9 +8935,9 @@
       "dev": true
     },
     "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,
       "requires": {
         "@sinonjs/commons": "^3.0.1",
diff --git a/package.json b/package.json
index 60f11491..be113991 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,6 @@
     "mock-local-storage": "^1.1.24",
     "nyc": "^17.1.0",
     "sass": "^1.89.2",
-    "sinon": "^20.0.0"
+    "sinon": "^21.0.0"
   }
 }