diff --git a/package.json b/package.json
index ef16f8d76..248e4a2f2 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "findup-sync": "~0.3.0",
     "glob": "~7.1.6",
     "grunt-cli": "~1.3.2",
-    "grunt-known-options": "~1.1.0",
+    "grunt-known-options": "~1.1.1",
     "grunt-legacy-log": "~3.0.0",
     "grunt-legacy-util": "~2.0.0",
     "iconv-lite": "~0.4.13",
@@ -60,7 +60,7 @@
     "grunt-contrib-watch": "~1.1.0",
     "grunt-eslint": "~18.1.0",
     "temporary": "~0.0.4",
-    "through2": "~2.0.0"
+    "through2": "~4.0.2"
   },
   "files": [
     "lib",