diff --git a/package.json b/package.json
index 13431d03..6ae26193 100644
--- a/package.json
+++ b/package.json
@@ -102,7 +102,7 @@
     "jpeg-js": "0.3.7",
     "mime": "2.5.2",
     "minimist": "1.2.0",
-    "mocha": "8.4.0",
+    "mocha": "9.1.3",
     "ncp": "2.0.0",
     "pixelmatch": "4.0.2",
     "pngjs": "6.0.0",