diff --git a/lib/std/c.zig b/lib/std/c.zig
index 684758286..45d0b4db0 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -109,6 +109,7 @@ pub extern "c" fn setreuid(ruid: c_uint, euid: c_uint) c_int;
 pub extern "c" fn setregid(rgid: c_uint, egid: c_uint) c_int;
 pub extern "c" fn rmdir(path: [*:0]const u8) c_int;
 pub extern "c" fn getenv(name: [*:0]const u8) ?[*:0]u8;
+pub extern "c" fn getrusage(who: c_int, usage: *rusage) c_int;
 pub extern "c" fn sysctl(name: [*]const c_int, namelen: c_uint, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
 pub extern "c" fn sysctlbyname(name: [*:0]const u8, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
 pub extern "c" fn sysctlnametomib(name: [*:0]const u8, mibp: ?*c_int, sizep: ?*usize) c_int;
diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
index 6fa8bc1f3..678868a2c 100644
--- a/lib/std/os/bits/linux.zig
+++ b/lib/std/os/bits/linux.zig
@@ -1475,4 +1475,5 @@ pub const rusage = extern struct {
     nsignals: isize,
     nvcsw: isize,
     nivcsw: isize,
+    __reserved: [16]isize = [1]isize{0} ** 16,
 };