diff --git a/package.json b/package.json
index 3d252b415..c7517aa72 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "escape-string-regexp": "^1.0.3",
     "event-to-promise": "^0.7.0",
     "exec-promise": "^0.6.1",
-    "execa": "^0.3.0",
+    "execa": "^0.4.0",
     "express": "^4.13.3",
     "express-session": "^1.11.3",
     "fatfs": "^0.10.3",