diff --git a/contracts/package-lock.json b/contracts/package-lock.json
index 8ff053a..a6ba1ae 100644
--- a/contracts/package-lock.json
+++ b/contracts/package-lock.json
@@ -10,7 +10,7 @@
       },
       "devDependencies": {
         "@types/bn.js": "^5.1.0",
-        "@types/chai": "^4.3.0",
+        "@types/chai": "^5.2.3",
         "@types/mocha": "^9.0.0",
         "chai": "^6.2.2",
         "mocha": "^9.0.3",
@@ -239,11 +239,15 @@
       }
     },
     "node_modules/@types/chai": {
-      "version": "4.3.20",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.20.tgz",
-      "integrity": "sha512-/pC9HAB5I/xMlc5FP77qjCnI16ChlJfW0tGa0IUcFn38VJrTV6DeZ60NU5KZBtaOZqjdpwTWohz5HU1RrhiYxQ==",
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
+      "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
       "dev": true,
-      "license": "MIT"
+      "license": "MIT",
+      "dependencies": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
     },
     "node_modules/@types/connect": {
       "version": "3.4.38",
@@ -254,6 +258,13 @@
         "@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,
+      "license": "MIT"
+    },
     "node_modules/@types/json5": {
       "version": "0.0.29",
       "resolved": "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz",
@@ -379,6 +390,16 @@
         "node": ">=0.10.0"
       }
     },
+    "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,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/balanced-match": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
diff --git a/contracts/package.json b/contracts/package.json
index 824cbe7..4686e69 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -12,7 +12,7 @@
     "mocha": "^9.0.3",
     "ts-mocha": "^10.0.0",
     "@types/bn.js": "^5.1.0",
-    "@types/chai": "^4.3.0",
+    "@types/chai": "^5.2.3",
     "@types/mocha": "^9.0.0",
     "typescript": "^5.7.3",
     "prettier": "^3.8.1"
diff --git a/contracts/yarn.lock b/contracts/yarn.lock
index ca5b777..3773607 100644
--- a/contracts/yarn.lock
+++ b/contracts/yarn.lock
@@ -116,10 +116,13 @@
   dependencies:
     "@types/node" "*"
 
-"@types/chai@^4.3.0":
-  version "4.3.20"
-  resolved "https://registry.npmjs.org/@types/chai/-/chai-4.3.20.tgz"
-  integrity sha512-/pC9HAB5I/xMlc5FP77qjCnI16ChlJfW0tGa0IUcFn38VJrTV6DeZ60NU5KZBtaOZqjdpwTWohz5HU1RrhiYxQ==
+"@types/chai@^5.2.3":
+  version "5.2.3"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-5.2.3.tgz#8e9cd9e1c3581fa6b341a5aed5588eb285be0b4a"
+  integrity sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==
+  dependencies:
+    "@types/deep-eql" "*"
+    assertion-error "^2.0.1"
 
 "@types/connect@^3.4.33":
   version "3.4.38"
@@ -128,6 +131,11 @@
   dependencies:
     "@types/node" "*"
 
+"@types/deep-eql@*":
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/@types/deep-eql/-/deep-eql-4.0.2.tgz#334311971d3a07121e7eb91b684a605e7eea9cbd"
+  integrity sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==
+
 "@types/json5@^0.0.29":
   version "0.0.29"
   resolved "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz"
@@ -216,6 +224,11 @@ arrify@^1.0.0:
   resolved "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz"
   integrity sha512-3CYzex9M9FGQjCGMGyi6/31c8GJbgb0qGyrx5HWxPd0aCwh4cB2YjMb2Xf9UuoogrMrlO9cTqnB5rI5GHZTcUA==
 
+assertion-error@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-2.0.1.tgz#f641a196b335690b1070bf00b6e7593fec190bf7"
+  integrity sha512-Izi8RQcffqCeNVgFigKli1ssklIbpHnCYc6AknXGYoB6grJqyeby7jv12JUQgmTAnIDnbck1uxksT4dzN3PWBA==
+
 balanced-match@^1.0.0:
   version "1.0.2"
   resolved "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz"
@@ -975,11 +988,6 @@ tslib@^2.8.0:
   resolved "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz"
   integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==
 
-type-detect@^4.0.0, type-detect@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz"
-  integrity sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw==
-
 typescript@^5.7.3:
   version "5.9.3"
   resolved "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz"