diff --git a/tokio-native-tls/src/lib.rs b/tokio-native-tls/src/lib.rs
index 8ce19c0..4636bd8 100644
--- a/tokio-native-tls/src/lib.rs
+++ b/tokio-native-tls/src/lib.rs
@@ -147,7 +147,14 @@ where
     S: AsyncWrite + Unpin,
 {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        self.with_context(|ctx, stream| stream.poll_write(ctx, buf))
+        let n = self.with_context(|ctx, stream| stream.poll_write(ctx, buf))?;
+
+        #[cfg(target_os = "macos")]
+        {
+            self.flush()?;
+        }
+
+        Ok(n)
     }
 
     fn flush(&mut self) -> io::Result<()> {