diff --git a/src/sys/unix.rs b/src/sys/unix.rs
index 65e494bc..ccb149f9 100644
--- a/src/sys/unix.rs
+++ b/src/sys/unix.rs
@@ -271,6 +271,7 @@ pub(crate) use libc::{
     target_os = "macos",
     target_os = "netbsd",
     target_os = "nto",
+    target_os = "qnx",
     target_os = "openbsd",
     target_os = "solaris",
     target_os = "tvos",
@@ -289,6 +290,7 @@ pub(crate) use libc::{IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP};
     target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd",
+    target_os = "qnx",
     target_os = "solaris",
     target_os = "tvos",
     target_os = "watchos",
@@ -427,6 +429,7 @@ type IovLen = usize;
     target_os = "macos",
     target_os = "netbsd",
     target_os = "nto",
+    target_os = "qnx",
     target_os = "openbsd",
     target_os = "solaris",
     target_os = "tvos",
@@ -1297,6 +1300,7 @@ pub(crate) fn set_tcp_keepalive(fd: RawSocket, keepalive: &TcpKeepalive) -> io::
         target_os = "ios",
         target_os = "visionos",
         target_os = "linux",
+        target_os = "qnx",
         target_os = "macos",
         target_os = "netbsd",
         target_os = "tvos",