diff --git a/package-lock.json b/package-lock.json
index bee36f86..dd73d8fa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35,7 +35,7 @@
         "@types/jsonpath": "^0.2.4",
         "@types/mocha": "^10",
         "@types/node": "^24",
-        "@types/sinon": "^17.0.3",
+        "@types/sinon": "^21.0.0",
         "@typescript-eslint/eslint-plugin": "^8.13.0",
         "chai": "^6.2.2",
         "eslint": "^8",
@@ -3245,9 +3245,9 @@
       }
     },
     "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": "15.1.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-15.1.1.tgz",
+      "integrity": "sha512-cO5W33JgAPbOh07tvZjUOJ7oWhtaqGHiZw+11DPbyqh2kHTBc3eF/CjJDeQ4205RLQsX6rxCuYOroFQwl7JDRw==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
@@ -3255,9 +3255,9 @@
       }
     },
     "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": {
@@ -4230,9 +4230,9 @@
       "license": "MIT"
     },
     "node_modules/@types/sinon": {
-      "version": "17.0.4",
-      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-17.0.4.tgz",
-      "integrity": "sha512-RHnIrhfPO3+tJT0s7cFaXGZvsL4bbR3/k7z3P312qMS4JaS2Tk+KiwiLx1S0rQ56ERj00u1/BtdyVd0FY+Pdew==",
+      "version": "21.0.0",
+      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-21.0.0.tgz",
+      "integrity": "sha512-+oHKZ0lTI+WVLxx1IbJDNmReQaIsQJjN2e7UUrJHEeByG7bFeKJYsv1E75JxTQ9QKJDp21bAa/0W2Xo4srsDnw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -14880,16 +14880,16 @@
       }
     },
     "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 8fb80c0b..2f608b55 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "@types/jsonpath": "^0.2.4",
     "@types/mocha": "^10",
     "@types/node": "^24",
-    "@types/sinon": "^17.0.3",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.13.0",
     "chai": "^6.2.2",
     "eslint": "^8",