diff --git a/package-lock.json b/package-lock.json
index 5de0451..8fb9e63 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,7 +29,7 @@
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@@ -3954,12 +3911,6 @@
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@@ -5074,15 +4970,6 @@
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@@ -5648,12 +5534,13 @@
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diff --git a/package.json b/package.json
index d37a36d..43404c7 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",
-    "@types/chai": "^4.3.3",
+    "@types/chai": "^5.2.0",
     "@types/chai-as-promised": "^8.0.2",
     "@types/connect": "^3.4.35",
     "@types/mime-types": "^2.1.1",
@@ -80,7 +80,7 @@
     "@types/sinon": "^22.0.0",
     "@types/sinon-chai": "^4.0.0",
     "@types/supertest": "^6.0.2",
-    "chai": "^4.4.1",
+    "chai": "^6.2.2",
     "chai-as-promised": "^8.0.2",
     "concat-stream": "^2.0.0",
     "eslint": "^10.6.0",
@@ -93,8 +93,8 @@
     "nyc": "^18.0.0",
     "prettier": "^3.9.4",
     "rimraf": "^6.0.1",
-    "sinon": "^17.0.1",
-    "sinon-chai": "^3.7.0",
+    "sinon": "^22.1.0",
+    "sinon-chai": "^4.0.0",
     "source-map-support": "^0.5.21",
     "std-mocks": "^2.0.0",
     "supertest": "^7.0.0",