diff --git a/package-lock.json b/package-lock.json
index 662006e..a1a8978 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "typescript": "^5.9.3"
       },
       "devDependencies": {
-        "@types/chai": "^4.3.17",
+        "@types/chai": "^5.2.3",
         "@types/express": "^5.0.3",
         "@types/mocha": "^10.0.10",
         "@types/node": "^24.6.1",
@@ -737,10 +737,14 @@
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     "node_modules/@types/chai": {
-      "version": "4.3.17",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.17.tgz",
-      "integrity": "sha512-zmZ21EWzR71B4Sscphjief5djsLre50M6lI622OSySTmn9DB3j+C3kWroHfBQWXbOBwbgg/M8CG/hUxDLIloow==",
-      "dev": true
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
+      "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
+      "dev": true,
+      "dependencies": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
     },
     "node_modules/@types/connect": {
       "version": "3.4.35",
@@ -750,6 +754,12 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/deep-eql": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
+      "integrity": "sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==",
+      "dev": true
+    },
     "node_modules/@types/express": {
       "version": "5.0.3",
       "resolved": "https://registry.npmjs.org/@types/express/-/express-5.0.3.tgz",
@@ -951,6 +961,15 @@
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       "license": "MIT"
     },
+    "node_modules/assertion-error": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-2.0.1.tgz",
+      "integrity": "sha512-Izi8RQcffqCeNVgFigKli1ssklIbpHnCYc6AknXGYoB6grJqyeby7jv12JUQgmTAnIDnbck1uxksT4dzN3PWBA==",
+      "dev": true,
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/available-typed-arrays": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/available-typed-arrays/-/available-typed-arrays-1.0.7.tgz",
@@ -4981,10 +5000,14 @@
       }
     },
     "@types/chai": {
-      "version": "4.3.17",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.17.tgz",
-      "integrity": "sha512-zmZ21EWzR71B4Sscphjief5djsLre50M6lI622OSySTmn9DB3j+C3kWroHfBQWXbOBwbgg/M8CG/hUxDLIloow==",
-      "dev": true
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
+      "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
+      "dev": true,
+      "requires": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
     },
     "@types/connect": {
       "version": "3.4.35",
@@ -4994,6 +5017,12 @@
         "@types/node": "*"
       }
     },
+    "@types/deep-eql": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
+      "integrity": "sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==",
+      "dev": true
+    },
     "@types/express": {
       "version": "5.0.3",
       "resolved": "https://registry.npmjs.org/@types/express/-/express-5.0.3.tgz",
@@ -5157,6 +5186,12 @@
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     },
+    "assertion-error": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-2.0.1.tgz",
+      "integrity": "sha512-Izi8RQcffqCeNVgFigKli1ssklIbpHnCYc6AknXGYoB6grJqyeby7jv12JUQgmTAnIDnbck1uxksT4dzN3PWBA==",
+      "dev": true
+    },
     "available-typed-arrays": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/available-typed-arrays/-/available-typed-arrays-1.0.7.tgz",
diff --git a/package.json b/package.json
index b73f7e1..5158f7e 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "typescript": "^5.9.3"
   },
   "devDependencies": {
-    "@types/chai": "^4.3.17",
+    "@types/chai": "^5.2.3",
     "@types/express": "^5.0.3",
     "@types/mocha": "^10.0.10",
     "@types/node": "^24.6.1",