diff --git a/src/header/signal/cbindgen.toml b/src/header/signal/cbindgen.toml
index 14ec586ebc10924772373f4891f97a7a64931675..a7055988c9b80cb158b692175ce1cab9f95a2304 100644
--- a/src/header/signal/cbindgen.toml
+++ b/src/header/signal/cbindgen.toml
@@ -1,4 +1,4 @@
-sys_includes = ["stdint.h", "sys/types.h", "time.h"]
+sys_includes = ["stdint.h", "sys/types.h", "time.h", "bits/pthread.h"]
 include_guard = "_RELIBC_SIGNAL_H"
 trailer = "#include <bits/signal.h>"
 language = "C"