diff --git a/package-lock.json b/package-lock.json
index c299edc..3416d6b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -367,9 +367,9 @@
       "integrity": "sha512-6ckxMjBBD8URvjB6J3NcnuAn5Pkl7t3TizAg+xdlzzQGSPSmBcXf8KoIH0ua/i+tio+ZRUHEXp0HEmvaR4kt0w=="
     },
     "@types/chai": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.0.tgz",
-      "integrity": "sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==",
+      "version": "4.2.17",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.17.tgz",
+      "integrity": "sha512-LaiwWNnYuL8xJlQcE91QB2JoswWZckq9A4b+nMPq8dt8AP96727Nb3X4e74u+E3tm4NLTILNI9MYFsyVc30wSA==",
       "dev": true
     },
     "@types/mocha": {
diff --git a/package.json b/package.json
index 383a8d8..6c889f4 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "typescript": ">=3.6.2",
     "tslint": ">=5.19.0",
     "ts-node": ">=8.3.0",
-    "@types/chai": "4.2.0",
+    "@types/chai": "4.2.17",
     "@types/mocha": "^5.2.7",
     "chai": "4.2.0",
     "mocha": "6.2.0"