diff --git a/Cargo.lock b/Cargo.lock
index b93f93ee66..c82222e4ed 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -155,7 +155,7 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.3.5"
+version = "0.4.0"
 dependencies = [
  "bitflags",
 ]
diff --git a/syscall b/syscall
index 745e9eb2bc..1bef275ffc 160000
--- a/syscall
+++ b/syscall
@@ -1 +1 @@
-Subproject commit 745e9eb2bc777d635c79fd23047c011c9c6e6165
+Subproject commit 1bef275ffcc50c825214f5a349aa94932efb342c