diff --git a/src/header/mod.rs b/src/header/mod.rs
index 4bdb6b1..9d1da43 100644
--- a/src/header/mod.rs
+++ b/src/header/mod.rs
@@ -76,7 +76,7 @@ pub mod setjmp;
 pub mod sgtty;
 pub mod shadow;
 pub mod signal;
-// TODO: spawn.h
+pub mod spawn;
 // TODO: stdalign.h (likely C implementation)
 // stdarg.h implemented in C
 // stdatomic.h implemented in C
@@ -93,20 +93,17 @@ pub mod sys_auxv;
 pub mod sys_epoll;
 pub mod sys_file;
 pub mod sys_ioctl;
-// TODO: sys/ipc.h
 pub mod sys_mman;
-// TODO: sys/msg.h
 pub mod sys_ptrace;
 pub mod sys_resource;
 pub mod sys_select;
-// TODO: sys/sem.h
-// TODO: sys/shm.h
 pub mod sys_socket;
 pub mod sys_stat;
 pub mod sys_statvfs;
 #[allow(non_upper_case_globals)]
 pub mod sys_syscall;
 pub mod sys_time;
+pub mod sys_timerfd;
 #[deprecated]
 pub mod sys_timeb;
 //pub mod sys_times;
@@ -128,7 +125,7 @@ pub mod tar;
 // TODO: term.h (deprecated)
 pub mod termios;
 // TODO: tgmath.h (likely C implementation)
-// TODO: threads.h
+pub mod threads;
 pub mod time;
 // TODO: uchar.h
 // TODO: ucontext.h (deprecated)