diff --git a/libc/kernel/uapi/linux/falloc.h b/libc/kernel/uapi/linux/falloc.h
index 9ea0b24..fb734e0 100644
--- a/libc/kernel/uapi/linux/falloc.h
+++ b/libc/kernel/uapi/linux/falloc.h
@@ -24,5 +24,6 @@
 #define FALLOC_FL_NO_HIDE_STALE 0x04
 #define FALLOC_FL_COLLAPSE_RANGE 0x08
 #define FALLOC_FL_ZERO_RANGE 0x10
-#endif
+#define FALLOC_FL_INSERT_RANGE 0x20
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif