diff --git a/mod.zig b/mod.zig
index 4e030c064b57819212c5c01e0dbecebb5ff3d32c..bebf87e9209fd03f182af6dca108f03837c86bf7 100644
--- a/mod.zig
+++ b/mod.zig
@@ -2056,7 +2056,7 @@ pub const libc = struct {
 
     /// char *mkdtemp(char *template);
     /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/mkdtemp.html
-    pub extern fn mkdtemp(template: [*:0]u8) [*:0]u8;
+    pub extern fn mkdtemp(template: [*:0]u8) ?[*:0]u8;
 
     /// int mkfifo(const char *path, mode_t mode);
     /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/mkfifo.html
@@ -3481,3 +3481,8 @@ pub fn pthread_cond_broadcast(cond: *pthread_cond_t) !void {
     if (rc != 0) return errno.fromInt(rc);
     std.debug.assert(rc == 0);
 }
+pub fn mkdtemp(template: [*:0]u8) ![*:0]u8 {
+    const rc = libc.mkdtemp(template);
+    if (rc == null) return errno.fromInt(errno.fromLibC());
+    return rc.?;
+}
diff --git a/test.zig b/test.zig
index 061f8cfe5fa76f90cacd9bdfc7d27e4bc9293705..4ce5163aea3b26947e7e8f85b743945b26bd73e7 100644
--- a/test.zig
+++ b/test.zig
@@ -58,4 +58,5 @@ test {
     _ = &linux.pthread_cond_timedwait;
     _ = &linux.pthread_cond_signal;
     _ = &linux.pthread_cond_broadcast;
+    _ = &linux.mkdtemp;
 }