diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index ca6557eb51f6b..cb9f387c2ad7a 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -2452,6 +2452,7 @@ TCXONC
 TFD_CLOEXEC
 TFD_NONBLOCK
 TFD_TIMER_ABSTIME
+TFD_TIMER_CANCEL_ON_SET
 THOUSEP
 TIMER_ABSTIME
 TIOCCONS
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 93082f941aee7..68a69110263a2 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -1811,6 +1811,7 @@ pub const ITIMER_PROF: ::c_int = 2;
 pub const TFD_CLOEXEC: ::c_int = O_CLOEXEC;
 pub const TFD_NONBLOCK: ::c_int = O_NONBLOCK;
 pub const TFD_TIMER_ABSTIME: ::c_int = 1;
+pub const TFD_TIMER_CANCEL_ON_SET: ::c_int = 2;
 
 pub const _POSIX_VDISABLE: ::cc_t = 0;