diff --git a/Cargo.lock b/Cargo.lock
index c32ccbb..49bffbb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9,10 +9,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fbe5e23404da5b4f555ef85ebed98fb4083e55a00c317800bc2a50ede9f3d219"
 
 [[package]]
-name = "mach"
-version = "0.3.2"
+name = "mach2"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b823e83b2affd8f40a9ee8c29dbc56404c1e34cd2710921f2801e2cf29527afa"
+checksum = "6d0d1830bcd151a6fc4aea1369af235b36c1528fe976b8ff678683c9995eade8"
 dependencies = [
  "libc",
 ]
@@ -22,7 +22,7 @@ name = "slice-ring-buffer"
 version = "0.3.2"
 dependencies = [
  "libc",
- "mach",
+ "mach2",
  "winapi",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index aa6077c..0637ade 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,8 +17,8 @@ edition = "2018"
 [badges]
 maintenance = { status = "passively-maintained" }
 
-[target.'cfg(all(any(target_os = "macos", target_os = "ios"), not(feature = "unix_sysv")))'.dependencies.mach]
-version = "0.3"
+[target.'cfg(all(any(target_os = "macos", target_os = "ios"), not(feature = "unix_sysv")))'.dependencies.mach2]
+version = "0.4.1"
 default-features = false
 
 [target.'cfg(target_os = "windows")'.dependencies.winapi]
diff --git a/rustfmt.toml b/rustfmt.toml
index 238a83a..ed22845 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,2 +1,2 @@
 max_width = 79
-fn_args_layout = "Compressed"
+fn_params_layout = "Compressed"
diff --git a/src/lib.rs b/src/lib.rs
index 4983f79..c64c321 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -151,7 +151,7 @@ extern crate core;
     any(target_os = "macos", target_os = "ios"),
     not(feature = "unix_sysv")
 ))]
-extern crate mach;
+extern crate mach2 as mach;
 
 #[cfg(unix)]
 extern crate libc;
diff --git a/src/mirrored/macos.rs b/src/mirrored/macos.rs
index a901720..17f08e6 100644
--- a/src/mirrored/macos.rs
+++ b/src/mirrored/macos.rs
@@ -4,7 +4,6 @@
 
 use super::mem;
 
-use mach;
 use mach::boolean::boolean_t;
 use mach::kern_return::*;
 use mach::mach_types::mem_entry_name_port_t;
@@ -20,6 +19,7 @@ use mach::vm_inherit::VM_INHERIT_NONE;
 use mach::vm_prot::{vm_prot_t, VM_PROT_READ, VM_PROT_WRITE};
 use mach::vm_statistics::{VM_FLAGS_ANYWHERE, VM_FLAGS_FIXED};
 use mach::vm_types::mach_vm_address_t;
+use mach2 as mach;
 
 use super::AllocError;