diff --git a/package.json b/package.json
index 428d232..898e009 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "symlink-or-copy": "^1.0.1",
     "sync-disk-cache": "^1.3.3",
     "walk-sync": "^1.0.0",
-    "fs-merger": "^1.0.3"
+    "fs-merger": "^1.0.4"
   },
   "devDependencies": {
     "broccoli-test-helper": "^2.0.0",