diff --git a/libminijail.h b/libminijail.h
index 865a4f1..6738a32 100644
--- a/libminijail.h
+++ b/libminijail.h
@@ -49,6 +49,7 @@
 void minijail_log_seccomp_filter_failures(struct minijail *j);
 void minijail_use_caps(struct minijail *j, uint64_t capmask);
 void minijail_namespace_vfs(struct minijail *j);
+void minijail_namespace_enter_vfs(struct minijail *j, const char *ns_path);
 void minijail_namespace_net(struct minijail *j);
 /* Implies namespace_vfs and remount_readonly.
  * WARNING: this is NOT THREAD SAFE. See the block comment in </libminijail.c>.