diff --git a/src/bootstrap/Cargo.lock b/src/bootstrap/Cargo.lock
index f5220e361b34a..a99522546b958 100644
--- a/src/bootstrap/Cargo.lock
+++ b/src/bootstrap/Cargo.lock
@@ -29,6 +29,12 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitflags"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4682ae6287fcf752ecaabbfcc7b6f9b72aa33933dc23a554d853aea8eea8635"
+
 [[package]]
 name = "block-buffer"
 version = "0.10.2"
@@ -53,6 +59,7 @@ dependencies = [
  "ignore",
  "junction",
  "libc",
+ "nix",
  "object",
  "once_cell",
  "opener",
@@ -120,7 +127,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "84080e799e54cff944f4b4a4b0e71630b0e0443b25b985175c7dddc1a859b749"
 dependencies = [
  "anstyle",
- "bitflags",
+ "bitflags 1.3.2",
  "clap_lex",
 ]
 
@@ -403,9 +410,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.140"
+version = "0.2.148"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
+checksum = "9cdc71e17332e86d2e1d38c1f99edcb6288ee11b815fb1a4b049eaa2114d369b"
 
 [[package]]
 name = "linux-raw-sys"
@@ -448,6 +455,17 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "nix"
+version = "0.27.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2eb04e9c688eff1c89d72b407f168cf79bb9e867a9d3323ed6c01519eb9cc053"
+dependencies = [
+ "bitflags 2.4.0",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "ntapi"
 version = "0.4.0"
@@ -555,7 +573,7 @@ version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62f25bc4c7e55e0b0b7a1d43fb893f4fa1361d0abe38b9ce4f323c2adfe6ef42"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -587,7 +605,7 @@ version = "0.37.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d097081ed288dfe45699b72f5b5d648e5f15d64d900c7080273baa20c16a6849"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "errno",
  "io-lifetimes",
  "libc",
diff --git a/src/bootstrap/Cargo.toml b/src/bootstrap/Cargo.toml
index 9bf26948af3aa..b0319e3abc4f9 100644
--- a/src/bootstrap/Cargo.toml
+++ b/src/bootstrap/Cargo.toml
@@ -77,6 +77,10 @@ features = [
     "Win32_System_Time",
 ]
 
+[target.'cfg(unix)'.dependencies.nix]
+version = "0.27.1"
+features = ["user"]
+
 [dev-dependencies]
 pretty_assertions = "1.4"
 
diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 5c78015e56089..b842038d0a9f4 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -368,7 +368,7 @@ impl Build {
         // https://github.com/rust-lang/rust/blob/a8a33cf27166d3eabaffc58ed3799e054af3b0c6/src/bootstrap/bootstrap.py#L796-L797
         let is_sudo = match env::var_os("SUDO_USER") {
             Some(_sudo_user) => {
-                let uid = unsafe { libc::getuid() };
+                let uid = nix::unistd::Uid::current().as_raw();
                 uid == 0
             }
             None => false,