diff --git a/src/header/strings/cbindgen.toml b/src/header/strings/cbindgen.toml
index 2897bd5423..5f974357c2 100644
--- a/src/header/strings/cbindgen.toml
+++ b/src/header/strings/cbindgen.toml
@@ -1,4 +1,4 @@
-sys_includes = ["stddef.h", "stdint.h"]
+sys_includes = ["features.h", "stddef.h", "stdint.h"]
 include_guard = "_RELIBC_STRINGS_H"
 language = "C"
 style = "Tag"