diff --git a/mod.zig b/mod.zig
index 020b6ae996c24e70f838d9a2f612edd5489133e7..0adf8ccae38f16a2de1d2a14eb15b89788b5e51e 100644
--- a/mod.zig
+++ b/mod.zig
@@ -2814,6 +2814,21 @@ pub const S = struct {
     pub const IRWXO = 0o007;
 };
 
+pub const CLOCK = struct {
+    pub const REALTIME = 0;
+    pub const MONOTONIC = 1;
+    pub const PROCESS_CPUTIME_ID = 2;
+    pub const THREAD_CPUTIME_ID = 3;
+    pub const MONOTONIC_RAW = 4;
+    pub const REALTIME_COARSE = 5;
+    pub const MONOTONIC_COARSE = 6;
+    pub const BOOTTIME = 7;
+    pub const REALTIME_ALARM = 8;
+    pub const BOOTTIME_ALARM = 9;
+    pub const SGI_CYCLE = 10;
+    pub const TAI = 11;
+};
+
 pub const NAME_MAX = 255;
 pub const PATH_MAX = 4096;
 pub const NGROUPS_MAX = 32;
@@ -3108,3 +3123,10 @@ pub fn getaddrinfo(noalias nodename: ?[*:0]const u8, noalias servname: ?[*:0]con
 pub fn freeaddrinfo(ai: *const struct_addrinfo) void {
     return libc.freeaddrinfo(ai);
 }
+pub fn clock_gettime(clock_id: clockid_t) !struct_timespec {
+    var tp: struct_timespec = undefined;
+    const rc = libc.clock_gettime(clock_id, &tp);
+    if (rc == -1) return errno.fromInt(errno.fromLibC());
+    std.debug.assert(rc == 0);
+    return tp;
+}
diff --git a/test.zig b/test.zig
index b24d22ac335d0202d9536189cced29516f5a30f6..ff8468da0655681e71d891c00452fd87e90015fc 100644
--- a/test.zig
+++ b/test.zig
@@ -27,4 +27,5 @@ test {
     _ = &linux.recv;
     _ = &linux.getaddrinfo;
     _ = &linux.freeaddrinfo;
+    _ = &linux.clock_gettime;
 }