diff --git a/libc-test/semver/netbsd.txt b/libc-test/semver/netbsd.txt
index d6d519fd58ddb..62ba47df5c338 100644
--- a/libc-test/semver/netbsd.txt
+++ b/libc-test/semver/netbsd.txt
@@ -1542,3 +1542,5 @@ EXTATTR_NAMESPACE_EMPTY
 extattr_list_fd
 extattr_list_file
 extattr_list_link
+EOWNERDEAD
+ENOTRECOVERABLE
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index 41f6b23d123ee..906bdc9e9f0e4 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -1421,7 +1421,15 @@ pub const ENOATTR: ::c_int = 93;
 pub const EMULTIHOP: ::c_int = 94;
 pub const ENOLINK: ::c_int = 95;
 pub const EPROTO: ::c_int = 96;
-pub const ELAST: ::c_int = 96;
+pub const EOWNERDEAD: ::c_int = 97;
+pub const ENOTRECOVERABLE: ::c_int = 98;
+#[deprecated(
+    since = "0.2.143",
+    note = "This value will always match the highest defined error number \
+            and thus is not stable. \
+            See #3040 for more info."
+)]
+pub const ELAST: ::c_int = 98;
 
 pub const F_DUPFD_CLOEXEC: ::c_int = 12;
 pub const F_CLOSEM: ::c_int = 10;