diff --git a/package.json b/package.json
index 6429c795a..71f36f9b0 100644
--- a/package.json
+++ b/package.json
@@ -265,7 +265,7 @@
     "@eslint/js": "^9.29.0",
     "@microsoft/api-extractor": "7.52.10",
     "@sinonjs/fake-timers": "14.0.0",
-    "@types/chai": "4.3.20",
+    "@types/chai": "5.2.2",
     "@types/debug": "4.1.12",
     "@types/dirty-chai": "2.0.5",
     "@types/express": "5.0.3",
@@ -287,7 +287,7 @@
     "@types/tmp": "0.2.6",
     "@typescript-eslint/eslint-plugin": "^8.34.0",
     "@typescript-eslint/parser": "^8.34.0",
-    "chai": "4.5.0",
+    "chai": "5.2.1",
     "chai-exclude": "2.1.1",
     "coffeescript": "2.7.0",
     "dependency-lint": "7.1.0",