diff --git a/mod.zig b/mod.zig
index 5685fe81d3044ba743014cd2ad7978ecbee7cb5c..21ba365cb2731c4c961c4141af41db6d26b8f0e4 100644
--- a/mod.zig
+++ b/mod.zig
@@ -1388,6 +1388,7 @@ pub const libc = struct {
     //
 
     pub extern fn __errno_location() *c_int;
+    pub extern fn gettid() pid_t;
 };
 
 pub const clock_t = c_long;
@@ -1533,3 +1534,7 @@ pub fn mkdirat(fd: c_int, path: [*:0]const u8, mode: mode_t) errno.Error!void {
 pub fn pthread_self() pthread_t {
     return libc.pthread_self();
 }
+
+pub fn gettid() pid_t {
+    return libc.gettid();
+}
diff --git a/test.zig b/test.zig
index c21b915c17682faa1ce0ab784002cbfe39769efc..83928ca2c648cc816cd4f929ede051decafafedd 100644
--- a/test.zig
+++ b/test.zig
@@ -14,4 +14,5 @@ test {
     _ = &linux.readv;
     _ = &linux.mkdirat;
     _ = &linux.pthread_self;
+    _ = &linux.gettid;
 }