diff --git a/Cargo.toml b/Cargo.toml
index b30642f0a6b5e..82ecfe0cf6c05 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "libc"
-version = "0.2.56"
+version = "0.2.57"
 authors = ["The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
diff --git a/src/unix/notbsd/android/mod.rs b/src/unix/notbsd/android/mod.rs
index 8f2be73441115..f4fb83de5a5ff 100644
--- a/src/unix/notbsd/android/mod.rs
+++ b/src/unix/notbsd/android/mod.rs
@@ -1102,11 +1102,21 @@ pub const F_GETOWN: ::c_int = 9;
 pub const F_SETOWN: ::c_int = 8;
 pub const F_SETLK: ::c_int = 6;
 pub const F_SETLKW: ::c_int = 7;
-
 pub const F_RDLCK: ::c_int = 0;
 pub const F_WRLCK: ::c_int = 1;
 pub const F_UNLCK: ::c_int = 2;
 
+pub const RLIMIT_CPU: ::c_int = 0;
+pub const RLIMIT_FSIZE: ::c_int = 1;
+pub const RLIMIT_DATA: ::c_int = 2;
+pub const RLIMIT_STACK: ::c_int = 3;
+pub const RLIMIT_CORE: ::c_int = 4;
+pub const RLIMIT_LOCKS: ::c_int = 10;
+pub const RLIMIT_SIGPENDING: ::c_int = 11;
+pub const RLIMIT_MSGQUEUE: ::c_int = 12;
+pub const RLIMIT_NICE: ::c_int = 13;
+pub const RLIMIT_RTPRIO: ::c_int = 14;
+
 pub const TCGETS: ::c_int = 0x5401;
 pub const TCSETS: ::c_int = 0x5402;
 pub const TCSETSW: ::c_int = 0x5403;
diff --git a/src/unix/notbsd/emscripten/mod.rs b/src/unix/notbsd/emscripten/mod.rs
index cd1edaac2af88..ba13d8eb7dc30 100644
--- a/src/unix/notbsd/emscripten/mod.rs
+++ b/src/unix/notbsd/emscripten/mod.rs
@@ -1410,6 +1410,16 @@ pub const RLIMIT_NOFILE: ::c_int = 7;
 pub const RLIMIT_AS: ::c_int = 9;
 pub const RLIMIT_NPROC: ::c_int = 6;
 pub const RLIMIT_MEMLOCK: ::c_int = 8;
+pub const RLIMIT_CPU: ::c_int = 0;
+pub const RLIMIT_FSIZE: ::c_int = 1;
+pub const RLIMIT_DATA: ::c_int = 2;
+pub const RLIMIT_STACK: ::c_int = 3;
+pub const RLIMIT_CORE: ::c_int = 4;
+pub const RLIMIT_LOCKS: ::c_int = 10;
+pub const RLIMIT_SIGPENDING: ::c_int = 11;
+pub const RLIMIT_MSGQUEUE: ::c_int = 12;
+pub const RLIMIT_NICE: ::c_int = 13;
+pub const RLIMIT_RTPRIO: ::c_int = 14;
 
 pub const O_APPEND: ::c_int = 1024;
 pub const O_CREAT: ::c_int = 64;
diff --git a/src/unix/notbsd/linux/mips/mod.rs b/src/unix/notbsd/linux/mips/mod.rs
index 39d1450106e25..46c49ff5fdc20 100644
--- a/src/unix/notbsd/linux/mips/mod.rs
+++ b/src/unix/notbsd/linux/mips/mod.rs
@@ -894,6 +894,17 @@ pub const NFT_TRACETYPE_RULE: ::c_int = 3;
 pub const NFT_NG_INCREMENTAL: ::c_int = 0;
 pub const NFT_NG_RANDOM: ::c_int = 1;
 
+pub const RLIMIT_CPU: ::__rlimit_resource_t = 0;
+pub const RLIMIT_FSIZE: ::__rlimit_resource_t = 1;
+pub const RLIMIT_DATA: ::__rlimit_resource_t = 2;
+pub const RLIMIT_STACK: ::__rlimit_resource_t = 3;
+pub const RLIMIT_CORE: ::__rlimit_resource_t = 4;
+pub const RLIMIT_LOCKS: ::__rlimit_resource_t = 10;
+pub const RLIMIT_SIGPENDING: ::__rlimit_resource_t = 11;
+pub const RLIMIT_MSGQUEUE: ::__rlimit_resource_t = 12;
+pub const RLIMIT_NICE: ::__rlimit_resource_t = 13;
+pub const RLIMIT_RTPRIO: ::__rlimit_resource_t = 14;
+
 #[doc(hidden)]
 #[deprecated(
     since = "0.2.55",
diff --git a/src/unix/notbsd/linux/musl/mod.rs b/src/unix/notbsd/linux/musl/mod.rs
index 62eff604b3209..99d3ed8324f42 100644
--- a/src/unix/notbsd/linux/musl/mod.rs
+++ b/src/unix/notbsd/linux/musl/mod.rs
@@ -331,6 +331,17 @@ pub const SO_RXQ_OVFL: ::c_int = 40;
 pub const SO_PEEK_OFF: ::c_int = 42;
 pub const SO_BUSY_POLL: ::c_int = 46;
 
+pub const RLIMIT_CPU: ::c_int = 0;
+pub const RLIMIT_FSIZE: ::c_int = 1;
+pub const RLIMIT_DATA: ::c_int = 2;
+pub const RLIMIT_STACK: ::c_int = 3;
+pub const RLIMIT_CORE: ::c_int = 4;
+pub const RLIMIT_LOCKS: ::c_int = 10;
+pub const RLIMIT_SIGPENDING: ::c_int = 11;
+pub const RLIMIT_MSGQUEUE: ::c_int = 12;
+pub const RLIMIT_NICE: ::c_int = 13;
+pub const RLIMIT_RTPRIO: ::c_int = 14;
+
 extern {
     pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut ::mmsghdr, vlen: ::c_uint,
                     flags: ::c_uint) -> ::c_int;
diff --git a/src/unix/notbsd/linux/other/mod.rs b/src/unix/notbsd/linux/other/mod.rs
index e95e11cd3ef74..7ce58adb8d699 100644
--- a/src/unix/notbsd/linux/other/mod.rs
+++ b/src/unix/notbsd/linux/other/mod.rs
@@ -340,6 +340,17 @@ cfg_if! {
     }
 }
 
+pub const RLIMIT_CPU: ::__rlimit_resource_t = 0;
+pub const RLIMIT_FSIZE: ::__rlimit_resource_t = 1;
+pub const RLIMIT_DATA: ::__rlimit_resource_t = 2;
+pub const RLIMIT_STACK: ::__rlimit_resource_t = 3;
+pub const RLIMIT_CORE: ::__rlimit_resource_t = 4;
+pub const RLIMIT_LOCKS: ::__rlimit_resource_t = 10;
+pub const RLIMIT_SIGPENDING: ::__rlimit_resource_t = 11;
+pub const RLIMIT_MSGQUEUE: ::__rlimit_resource_t = 12;
+pub const RLIMIT_NICE: ::__rlimit_resource_t = 13;
+pub const RLIMIT_RTPRIO: ::__rlimit_resource_t = 14;
+
 pub const MADV_SOFT_OFFLINE: ::c_int = 101;
 pub const MS_RMT_MASK: ::c_ulong = 0x02800051;
 
diff --git a/src/unix/notbsd/linux/s390x/mod.rs b/src/unix/notbsd/linux/s390x/mod.rs
index 132e89f734429..5572094029dc4 100644
--- a/src/unix/notbsd/linux/s390x/mod.rs
+++ b/src/unix/notbsd/linux/s390x/mod.rs
@@ -992,6 +992,17 @@ pub const POLLWRBAND: ::c_short = 0x200;
 pub const IXON: ::tcflag_t = 0o002000;
 pub const IXOFF: ::tcflag_t = 0o010000;
 
+pub const RLIMIT_CPU: ::__rlimit_resource_t = 0;
+pub const RLIMIT_FSIZE: ::__rlimit_resource_t = 1;
+pub const RLIMIT_DATA: ::__rlimit_resource_t = 2;
+pub const RLIMIT_STACK: ::__rlimit_resource_t = 3;
+pub const RLIMIT_CORE: ::__rlimit_resource_t = 4;
+pub const RLIMIT_LOCKS: ::__rlimit_resource_t = 10;
+pub const RLIMIT_SIGPENDING: ::__rlimit_resource_t = 11;
+pub const RLIMIT_MSGQUEUE: ::__rlimit_resource_t = 12;
+pub const RLIMIT_NICE: ::__rlimit_resource_t = 13;
+pub const RLIMIT_RTPRIO: ::__rlimit_resource_t = 14;
+
 pub const SYS_exit: ::c_long = 1;
 pub const SYS_fork: ::c_long = 2;
 pub const SYS_read: ::c_long = 3;
diff --git a/src/unix/notbsd/mod.rs b/src/unix/notbsd/mod.rs
index 974bcb18883ec..27064662f32f2 100644
--- a/src/unix/notbsd/mod.rs
+++ b/src/unix/notbsd/mod.rs
@@ -457,17 +457,6 @@ pub const CLOCK_BOOTTIME_ALARM: ::clockid_t = 9;
 // pub const CLOCK_TAI: ::clockid_t = 11;
 pub const TIMER_ABSTIME: ::c_int = 1;
 
-pub const RLIMIT_CPU: ::c_int = 0;
-pub const RLIMIT_FSIZE: ::c_int = 1;
-pub const RLIMIT_DATA: ::c_int = 2;
-pub const RLIMIT_STACK: ::c_int = 3;
-pub const RLIMIT_CORE: ::c_int = 4;
-pub const RLIMIT_LOCKS: ::c_int = 10;
-pub const RLIMIT_SIGPENDING: ::c_int = 11;
-pub const RLIMIT_MSGQUEUE: ::c_int = 12;
-pub const RLIMIT_NICE: ::c_int = 13;
-pub const RLIMIT_RTPRIO: ::c_int = 14;
-
 pub const RUSAGE_SELF: ::c_int = 0;
 
 pub const O_RDONLY: ::c_int = 0;