Index: src/main.c
--- src/main.c.orig
+++ src/main.c
@@ -355,6 +355,12 @@ main (int argc, char *argv[]) 
                  (unsigned long)max_size);
     }
 
+    if (pledge("stdio rpath wpath cpath", NULL) == -1)
+    {
+        perror ("pledge");
+        exit (1);
+    }
+
     /* open the file */
     if (in_file)
     {