diff --git a/gnu/lib/libexecinfo/backtrace.3 b/gnu/lib/libexecinfo/backtrace.3
index 1cc844b279c..47f437fdbbb 100644
--- a/gnu/lib/libexecinfo/backtrace.3
+++ b/gnu/lib/libexecinfo/backtrace.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: backtrace.3,v 1.3 2021/06/11 19:36:00 jmc Exp $
+.\"	$OpenBSD: backtrace.3,v 1.4 2025/06/07 20:54:35 schwarze Exp $
 .\"
 .\" Copyright (c) 2021 Todd Mortimer <mortimer@openbsd.org>
 .\" Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: June 11 2021 $
+.Dd $Mdocdate: June 7 2025 $
 .Dt BACKTRACE 3
 .Os
 .Sh NAME
@@ -39,6 +39,7 @@
 .Nm backtrace_symbols_fd_fmt
 .Nd fill in the backtrace of the currently executing thread
 .Sh SYNOPSIS
+.Lb libexecinfo
 .In execinfo.h
 .Ft size_t
 .Fn backtrace "void **addrlist" "size_t len"