diff --git a/composer.json b/composer.json
index 9bf54bd..35dc37e 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     "require": {
         "hhvm": "^4.56",
         "hhvm/hsl": "^4.41",
-        "nuxed/filesystem": "^1.4",
+        "nuxed/filesystem": "^1.5",
         "nuxed/json": "^1.0"
     },
     "require-dev": {
@@ -34,4 +34,4 @@
         "test": "hacktest tests/",
         "type-check": "hh_client src/"
     }
-}
\ No newline at end of file
+}