diff --git a/package.json b/package.json
index e6edc78..d13a67a 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "node-sloc": "^0.1.12"
   },
   "devDependencies": {
-    "@types/chai": "^4.2.11",
+    "@types/chai": "^4.3.20",
     "@types/debug": "^4.1.5",
     "@types/micromatch": "^4.0.1",
     "@types/mocha": "^7.0.2",