diff --git a/mod.zig b/mod.zig
index 1953b2c9cd6eda81613ade3a97e519ceaa4d44f3..516e18aa75baf29d9a0917477f84dc8633ebfae8 100644
--- a/mod.zig
+++ b/mod.zig
@@ -2821,6 +2821,7 @@ pub const libc = struct {
     pub extern fn getrandom(buf: [*]u8, size: usize, flags: c_uint) isize;
     pub extern fn flock(fd: c_int, op: c_int) c_int;
     pub extern fn copy_file_range(fd_int: c_int, off_in: ?*off_t, fd_out: c_int, off_out: ?*off_t, size: usize, flags: c_uint) isize;
+    pub extern fn arc4random_buf(buf: [*]u8, n: usize) void;
 };
 
 comptime {