diff --git a/package-lock.json b/package-lock.json
index d734806..2b5ede7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -34,7 +34,7 @@
         "mocha": "^11.7.3",
         "proxyquire": "^2.1.3",
         "sinon": "^21.0.0",
-        "sinon-chai": "^3.7.0",
+        "sinon-chai": "^4.0.1",
         "typescript": "~5.9.3"
       },
       "engines": {
@@ -1316,6 +1316,16 @@
         "node": ">=14.14"
       }
     },
+    "node_modules/@iobroker/testing/node_modules/sinon-chai": {
+      "version": "3.7.0",
+      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.7.0.tgz",
+      "integrity": "sha512-mf5NURdUaSdnatJx3uhoBOrY9dtL19fiOtAdT1Azxg3+lNJFiuN0uzaU3xX1LeAfL17kHQhTAJgpsfhbMJMY2g==",
+      "dev": true,
+      "peerDependencies": {
+        "chai": "^4.0.0",
+        "sinon": ">=4.0.0"
+      }
+    },
     "node_modules/@iobroker/types": {
       "version": "6.0.11",
       "resolved": "https://registry.npmjs.org/@iobroker/types/-/types-6.0.11.tgz",
@@ -6670,12 +6680,12 @@
       }
     },
     "node_modules/sinon-chai": {
-      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.7.0.tgz",
-      "integrity": "sha512-mf5NURdUaSdnatJx3uhoBOrY9dtL19fiOtAdT1Azxg3+lNJFiuN0uzaU3xX1LeAfL17kHQhTAJgpsfhbMJMY2g==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-4.0.1.tgz",
+      "integrity": "sha512-xMKEEV3cYHC1G+boyr7QEqi80gHznYsxVdC9CdjP5JnCWz/jPGuXQzJz3PtBcb0CcHAxar15Y5sjLBoAs6a0yA==",
       "dev": true,
       "peerDependencies": {
-        "chai": "^4.0.0",
+        "chai": "^5.0.0 || ^6.0.0",
         "sinon": ">=4.0.0"
       }
     },
@@ -8382,6 +8392,13 @@
             "jsonfile": "^6.0.1",
             "universalify": "^2.0.0"
           }
+        },
+        "sinon-chai": {
+          "version": "3.7.0",
+          "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.7.0.tgz",
+          "integrity": "sha512-mf5NURdUaSdnatJx3uhoBOrY9dtL19fiOtAdT1Azxg3+lNJFiuN0uzaU3xX1LeAfL17kHQhTAJgpsfhbMJMY2g==",
+          "dev": true,
+          "requires": {}
         }
       }
     },
@@ -12104,9 +12121,9 @@
       }
     },
     "sinon-chai": {
-      "version": "3.7.0",
-      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.7.0.tgz",
-      "integrity": "sha512-mf5NURdUaSdnatJx3uhoBOrY9dtL19fiOtAdT1Azxg3+lNJFiuN0uzaU3xX1LeAfL17kHQhTAJgpsfhbMJMY2g==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-4.0.1.tgz",
+      "integrity": "sha512-xMKEEV3cYHC1G+boyr7QEqi80gHznYsxVdC9CdjP5JnCWz/jPGuXQzJz3PtBcb0CcHAxar15Y5sjLBoAs6a0yA==",
       "dev": true,
       "requires": {}
     },
diff --git a/package.json b/package.json
index db064c0..6a0f21b 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "mocha": "^11.7.3",
     "proxyquire": "^2.1.3",
     "sinon": "^21.0.0",
-    "sinon-chai": "^3.7.0",
+    "sinon-chai": "^4.0.1",
     "typescript": "~5.9.3"
   },
   "main": "main.js",