diff --git a/package.json b/package.json
index e619ef5..e0475e7 100644
--- a/package.json
+++ b/package.json
@@ -41,10 +41,10 @@
   },
   "devDependencies": {
     "async": "^3.0.1",
-    "mocha": "^7.1.2",
+    "mocha": "^8.2.1",
     "sax": "^1.2.4",
     "should": "^13.2.1",
-    "sinon": "^7.2.5"
+    "sinon": "^9.2.4"
   },
   "scripts": {
     "test": "node test-runner.js",