diff --git a/lib/libc/include/generic-glibc/sys/pidfd.h b/lib/libc/include/generic-glibc/sys/pidfd.h
index addf5eec7c..ca981c3ad5 100644
--- a/lib/libc/include/generic-glibc/sys/pidfd.h
+++ b/lib/libc/include/generic-glibc/sys/pidfd.h
@@ -21,6 +21,9 @@
 #include <fcntl.h>
 #include <bits/types/siginfo_t.h>
 
+// zig patch: check target glibc version
+#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 36) || __GLIBC__ > 2
+
 #define PIDFD_NONBLOCK O_NONBLOCK
 #define PIDFD_THREAD O_EXCL
 
@@ -45,8 +48,15 @@ extern int pidfd_getfd (int __pidfd, int __targetfd,
 extern int pidfd_send_signal (int __pidfd, int __sig, siginfo_t *__info,
 			      unsigned int __flags) __THROW;
 
+#endif /* (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 36) || __GLIBC__ > 2 */
+
+// zig patch: check target glibc version
+#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 39) || __GLIBC__ > 2
+
 /* Query the process ID (PID) from process descriptor FD.  Return the PID
    or -1 in case of an error.  */
 extern pid_t pidfd_getpid (int __fd) __THROW;
 
-#endif /* _PIDFD_H  */
\ No newline at end of file
+#endif /* (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 36) || __GLIBC__ > 2 */
+
+#endif /* _PIDFD_H  */