diff --git a/lib/std/os/bits/darwin.zig b/lib/std/os/bits/darwin.zig
index ce73d2a6dca67b42aa8a92fd97c6fb81b18c903b..9de24c352e1df25147ea385089931d3aeaff8919 100644
--- a/lib/std/os/bits/darwin.zig
+++ b/lib/std/os/bits/darwin.zig
@@ -1474,3 +1474,25 @@ pub const CLOCK_UPTIME_RAW = 8;
 pub const CLOCK_UPTIME_RAW_APPROX = 9;
 pub const CLOCK_PROCESS_CPUTIME_ID = 12;
 pub const CLOCK_THREAD_CPUTIME_ID = 16;
+
+pub const RUSAGE_SELF = 0;
+pub const RUSAGE_CHILDREN = -1;
+
+pub const rusage = extern struct {
+    utime: timeval,
+    stime: timeval,
+    maxrss: isize,
+    ixrss: isize,
+    idrss: isize,
+    isrss: isize,
+    minflt: isize,
+    majflt: isize,
+    nswap: isize,
+    inblock: isize,
+    oublock: isize,
+    msgsnd: isize,
+    msgrcv: isize,
+    nsignals: isize,
+    nvcsw: isize,
+    nivcsw: isize,
+};
diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
index 1ead0c7961ef5efa44a979490ff6d22f28425a4a..a79fc0b7de979756207c9061e7a0e5b8dd2dc63a 100644
--- a/lib/std/os/bits/linux.zig
+++ b/lib/std/os/bits/linux.zig
@@ -1769,7 +1769,7 @@ pub const rusage = extern struct {
     utime: timeval,
     stime: timeval,
     maxrss: isize,
-    ix_rss: isize,
+    ixrss: isize,
     idrss: isize,
     isrss: isize,
     minflt: isize,