diff --git a/package.json b/package.json
index 5a10cf5..7092539 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   },
   "homepage": "https://github.com/scottcorgan/hex-to-rgb",
   "devDependencies": {
-    "tap-spec": "^2.1.0",
+    "tap-spec": "^4.1.0",
     "tape": "^4.2.2"
   }
 }