diff --git a/lib/std/c.zig b/lib/std/c.zig
index 235ec18da1a1cddbd09eaf5acfae736aa28b0635..fc64f8b282310bb3fa767e2f790c5525fd84569c 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -11235,6 +11235,7 @@ pub extern "c" fn freeaddrinfo(res: *addrinfo) void;
 pub const getnameinfo = switch (native_os) {
     .dragonfly => dragonfly.getnameinfo,
     .freebsd => freebsd.getnameinfo,
+    .openbsd => openbsd.getnameinfo,
     else => private.getnameinfo,
 };
 
diff --git a/lib/std/c/openbsd.zig b/lib/std/c/openbsd.zig
index e6d277af9f4a613743d5d6fd1e29a739a7be6d93..5d9b863fdb7b50f173fc66ef3b85228beefb286b 100644
--- a/lib/std/c/openbsd.zig
+++ b/lib/std/c/openbsd.zig
@@ -9,10 +9,23 @@ const passwd = std.c.passwd;
 const timespec = std.c.timespec;
 const uid_t = std.c.uid_t;
 const pid_t = std.c.pid_t;
+const sockaddr = std.c.sockaddr;
+const socklen_t = std.c.socklen_t;
+const NI = std.c.NI;
+const EAI = std.c.EAI;
 
 comptime {
     assert(builtin.os.tag == .openbsd); // Prevent access of std.c symbols on wrong OS.
 }
+pub extern "c" fn getnameinfo(
+    noalias addr: *const sockaddr,
+    addrlen: socklen_t,
+    noalias host: ?[*]u8,
+    hostlen: usize,
+    noalias serv: ?[*]u8,
+    servlen: usize,
+    flags: NI,
+) EAI;
 
 pub extern "c" fn ptrace(request: c_int, pid: pid_t, addr: caddr_t, data: c_int) c_int;