diff --git a/package.json b/package.json
index 9d11c8c..2e75b92 100644
--- a/package.json
+++ b/package.json
@@ -36,10 +36,10 @@
   },
   "devDependencies": {
     "bluebird": "2.2.2",
-    "coveralls": "2.11.2",
-    "istanbul": "0.3.5",
-    "jshint": "2.9.4",
-    "mocha": "2.2.5",
+    "coveralls": "^3.1.1",
+    "istanbul": "^0.4.5",
+    "jshint": "^2.13.6",
+    "mocha": "^10.3.0",
     "mocha-lcov-reporter": "0.0.1",
     "typescript": "2.9"
   },