diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
index 9c0a29a652..2529abc2c8 100644
--- a/lib/std/os/bits/linux.zig
+++ b/lib/std/os/bits/linux.zig
@@ -1199,6 +1199,7 @@ pub const IORING_FEAT_NODROP = 1 << 1;
 pub const IORING_FEAT_SUBMIT_STABLE = 1 << 2;
 pub const IORING_FEAT_RW_CUR_POS = 1 << 3;
 pub const IORING_FEAT_CUR_PERSONALITY = 1 << 4;
+pub const IORING_FEAT_FAST_POLL = 1 << 5;
 
 // io_uring_params.flags