diff --git a/package.json b/package.json
index bd56d66..5c4a982 100644
--- a/package.json
+++ b/package.json
@@ -37,12 +37,12 @@
   },
   "devDependencies": {
     "airtap": "0.1.0",
-    "buffer": "~5.1.0",
+    "buffer": "~5.2.1",
     "coveralls": "^3.0.2",
-    "hallmark": "0.0.2",
+    "hallmark": "0.1.0",
     "level-community": "~3.0.0",
-    "nyc": "^12.0.2",
-    "standard": "^11.0.1",
+    "nyc": "^13.1.0",
+    "standard": "^12.0.1",
     "tape": "^4.0.0"
   },
   "hallmark": {