diff --git a/src/header/sys_select/cbindgen.toml b/src/header/sys_select/cbindgen.toml
index 24d911ce0c..2fe42a7155 100644
--- a/src/header/sys_select/cbindgen.toml
+++ b/src/header/sys_select/cbindgen.toml
@@ -1,4 +1,4 @@
-sys_includes = ["bits/sys/select.h", "sys/time.h"]
+sys_includes = ["bits/sys/select.h", "sys/time.h", "signal.h"]
 include_guard = "_SYS_SELECT_H"
 language = "C"
 style = "Tag"