diff --git a/package-lock.json b/package-lock.json
index 4664abb1..4ad974c8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -55,7 +55,7 @@
         "rollup-plugin-filesize": "^10.0.0",
         "rollup-plugin-visualizer": "^7.0.0",
         "semver": "^7.7.1",
-        "sinon": "^21.0.0",
+        "sinon": "^22.0.0",
         "ts-lit-plugin": "^2.0.2",
         "typescript": "^5.8.2",
         "wireit": "^0.14.11"
@@ -12724,15 +12724,15 @@
       }
     },
     "node_modules/sinon": {
-      "version": "21.1.2",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-21.1.2.tgz",
-      "integrity": "sha512-FS6mN+/bx7e2ajpXkEmOcWB6xBzWiuNoAQT18/+a20SS4U7FSYl8Ms7N6VTUxN/1JAjkx7aXp+THMC8xdpp0gA==",
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-22.0.0.tgz",
+      "integrity": "sha512-sq/6DpdXOrLyfbKlXLg/Usc7xu8YXPeLkOFZRvA3bNUSA2lhbrZ06yuXbH1fkzBPCbz9O10+7hznzUsjaYNm0Q==",
       "dev": true,
       "dependencies": {
         "@sinonjs/commons": "^3.0.1",
-        "@sinonjs/fake-timers": "^15.3.2",
+        "@sinonjs/fake-timers": "^15.4.0",
         "@sinonjs/samsam": "^10.0.2",
-        "diff": "^8.0.4"
+        "diff": "^9.0.0"
       },
       "funding": {
         "type": "opencollective",
@@ -12758,9 +12758,9 @@
       }
     },
     "node_modules/sinon/node_modules/diff": {
-      "version": "8.0.4",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-8.0.4.tgz",
-      "integrity": "sha512-DPi0FmjiSU5EvQV0++GFDOJ9ASQUVFh5kD+OzOnYdi7n3Wpm9hWWGfB/O2blfHcMVTL5WkQXSnRiK9makhrcnw==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-9.0.0.tgz",
+      "integrity": "sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw==",
       "dev": true,
       "engines": {
         "node": ">=0.3.1"
@@ -23304,15 +23304,15 @@
       }
     },
     "sinon": {
-      "version": "21.1.2",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-21.1.2.tgz",
-      "integrity": "sha512-FS6mN+/bx7e2ajpXkEmOcWB6xBzWiuNoAQT18/+a20SS4U7FSYl8Ms7N6VTUxN/1JAjkx7aXp+THMC8xdpp0gA==",
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-22.0.0.tgz",
+      "integrity": "sha512-sq/6DpdXOrLyfbKlXLg/Usc7xu8YXPeLkOFZRvA3bNUSA2lhbrZ06yuXbH1fkzBPCbz9O10+7hznzUsjaYNm0Q==",
       "dev": true,
       "requires": {
         "@sinonjs/commons": "^3.0.1",
-        "@sinonjs/fake-timers": "^15.3.2",
+        "@sinonjs/fake-timers": "^15.4.0",
         "@sinonjs/samsam": "^10.0.2",
-        "diff": "^8.0.4"
+        "diff": "^9.0.0"
       },
       "dependencies": {
         "@sinonjs/commons": {
@@ -23334,9 +23334,9 @@
           }
         },
         "diff": {
-          "version": "8.0.4",
-          "resolved": "https://registry.npmjs.org/diff/-/diff-8.0.4.tgz",
-          "integrity": "sha512-DPi0FmjiSU5EvQV0++GFDOJ9ASQUVFh5kD+OzOnYdi7n3Wpm9hWWGfB/O2blfHcMVTL5WkQXSnRiK9makhrcnw==",
+          "version": "9.0.0",
+          "resolved": "https://registry.npmjs.org/diff/-/diff-9.0.0.tgz",
+          "integrity": "sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw==",
           "dev": true
         }
       }
diff --git a/package.json b/package.json
index 4344f6fd..ed83a64a 100644
--- a/package.json
+++ b/package.json
@@ -181,7 +181,7 @@
     "rollup-plugin-filesize": "^10.0.0",
     "rollup-plugin-visualizer": "^7.0.0",
     "semver": "^7.7.1",
-    "sinon": "^21.0.0",
+    "sinon": "^22.0.0",
     "ts-lit-plugin": "^2.0.2",
     "typescript": "^5.8.2",
     "wireit": "^0.14.11"