diff --git a/Cargo.lock b/Cargo.lock
index 5de4289..34fd4eb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -39,7 +39,7 @@ dependencies = [
  "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "raw-cpuid 8.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.2.0",
+ "redox_syscall 0.2.1",
  "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab_allocator 0.3.1",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -127,7 +127,7 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]