diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index 30269b3d..c21d15ee 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -3007,6 +3007,7 @@ swapoff
 swapon
 sync
 sync_file_range
+syncfs
 syscall
 sysinfo
 tee
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index ec75521a..bb93d624 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -3257,6 +3257,7 @@ extern "C" {
     pub fn setdomainname(name: *const ::c_char, len: ::size_t) -> ::c_int;
     pub fn vhangup() -> ::c_int;
     pub fn sync();
+    pub fn syncfs(fd: ::c_int) -> ::c_int;
     pub fn syscall(num: ::c_long, ...) -> ::c_long;
     pub fn sched_getaffinity(pid: ::pid_t, cpusetsize: ::size_t, cpuset: *mut cpu_set_t)
         -> ::c_int;