diff --git a/src/header/stdlib/cbindgen.toml b/src/header/stdlib/cbindgen.toml
index 0c8062d6e7a21c692064a383492ede595bee2300..19233ba2768659d57377d5793974b1701c12227f 100644
--- a/src/header/stdlib/cbindgen.toml
+++ b/src/header/stdlib/cbindgen.toml
@@ -1,4 +1,4 @@
-sys_includes = ["stddef.h"]
+sys_includes = ["stddef.h", "alloca.h"]
 include_guard = "_STDLIB_H"
 language = "C"
 style = "Tag"