diff --git a/package-lock.json b/package-lock.json
index 909baf586d4..99bcfc95e3d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -42,7 +42,7 @@
         "jasmine-browser-runner": "^3.0.0",
         "jasmine-core": "^5.12.1",
         "prettier": "^3.3.3",
-        "sinon": "^21.0.1",
+        "sinon": "^21.0.3",
         "stylelint": "^16.10.0",
         "stylelint-config-standard-scss": "^13.1.0",
         "svgo": "^4.0.0",
@@ -2708,9 +2708,9 @@
       }
     },
     "node_modules/@sinonjs/fake-timers": {
-      "version": "15.1.0",
-      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-15.1.0.tgz",
-      "integrity": "sha512-cqfapCxwTGsrR80FEgOoPsTonoefMBY7dnUEbQ+GRcved0jvkJLzvX6F4WtN+HBqbPX/SiFsIRUp+IrCW/2I2w==",
+      "version": "15.2.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-15.2.0.tgz",
+      "integrity": "sha512-+SM3gQi95RWZLlD+Npy/UC5mHftlXwnVJMRpMyiqjrF4yNnbvi/Ubh3x9sLw6gxWSuibOn00uiLu1CKozehWlQ==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
@@ -2718,9 +2718,9 @@
       }
     },
     "node_modules/@sinonjs/samsam": {
-      "version": "8.0.3",
-      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-8.0.3.tgz",
-      "integrity": "sha512-hw6HbX+GyVZzmaYNh82Ecj1vdGZrqVIn/keDTg63IgAwiQPO+xCz99uG6Woqgb4tM0mUiFENKZ4cqd7IX94AXQ==",
+      "version": "9.0.3",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-9.0.3.tgz",
+      "integrity": "sha512-ZgYY7Dc2RW+OUdnZ1DEHg00lhRt+9BjymPKHog4PRFzr1U3MbK57+djmscWyKxzO1qfunHqs4N45WWyKIFKpiQ==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
@@ -9186,16 +9186,16 @@
       }
     },
     "node_modules/sinon": {
-      "version": "21.0.1",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-21.0.1.tgz",
-      "integrity": "sha512-Z0NVCW45W8Mg5oC/27/+fCqIHFnW8kpkFOq0j9XJIev4Ld0mKmERaZv5DMLAb9fGCevjKwaEeIQz5+MBXfZcDw==",
+      "version": "21.0.3",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-21.0.3.tgz",
+      "integrity": "sha512-0x8TQFr8EjADhSME01u1ZK31yv2+bd6Z5NrBCHVM+n4qL1wFqbxftmeyi3bwlr49FbbzRfrqSFOpyHCOh/YmYA==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
         "@sinonjs/commons": "^3.0.1",
-        "@sinonjs/fake-timers": "^15.1.0",
-        "@sinonjs/samsam": "^8.0.3",
-        "diff": "^8.0.2",
+        "@sinonjs/fake-timers": "^15.1.1",
+        "@sinonjs/samsam": "^9.0.3",
+        "diff": "^8.0.3",
         "supports-color": "^7.2.0"
       },
       "funding": {
diff --git a/package.json b/package.json
index ce707b059f0..94e6dee2693 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "jasmine-browser-runner": "^3.0.0",
     "jasmine-core": "^5.12.1",
     "prettier": "^3.3.3",
-    "sinon": "^21.0.1",
+    "sinon": "^21.0.3",
     "stylelint": "^16.10.0",
     "stylelint-config-standard-scss": "^13.1.0",
     "svgo": "^4.0.0",