diff --git a/package.json b/package.json
index edfa0e3..de83116 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "author": "drpaulbrewer@gmail.com",
   "license": "MIT",
   "devDependencies": {
-    "coveralls": "^3.0.0",
+    "coveralls": "^3.0.12",
     "istanbul": "^0",
     "mocha": "^6.1.4",
     "should": "^13.1.2"