diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 01185fd..92a6277 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -11167,6 +11167,9 @@
 #ifdef O_TEXT
     if (ins(d, "O_TEXT", (long)O_TEXT)) return -1;
 #endif
+#ifdef O_XATTR
+    if (ins(d, "O_XATTR", (long)O_XATTR)) return -1;
+#endif
 #ifdef O_LARGEFILE
     if (ins(d, "O_LARGEFILE", (long)O_LARGEFILE)) return -1;
 #endif
@@ -11197,6 +11200,9 @@
 #ifdef O_CLOEXEC
     if (ins(d, "O_CLOEXEC", (long)O_CLOEXEC)) return -1;
 #endif
+#ifdef O_ACCMODE
+    if (ins(d, "O_ACCMODE", (long)O_ACCMODE)) return -1;
+#endif
 /* posix - constants for *at functions */
 #ifdef AT_SYMLINK_NOFOLLOW
         if (ins(d, "AT_SYMLINK_NOFOLLOW", (long)AT_SYMLINK_NOFOLLOW)) return -1;
@@ -11262,6 +11268,10 @@
     /* Do not follow links.      */
     if (ins(d, "O_NOFOLLOW", (long)O_NOFOLLOW)) return -1;
 #endif
+#ifdef O_NOLINKS
+    /* Fails if link count of the named file is greater than 1 */
+    if (ins(d, "O_NOLINKS", (long)O_NOLINKS)) return -1;
+#endif
 #ifdef O_NOATIME
     /* Do not update the access time. */
     if (ins(d, "O_NOATIME", (long)O_NOATIME)) return -1;