Index: src/main.c
--- src/main.c.orig
+++ src/main.c
@@ -54,11 +54,13 @@
 */
 
 #include <ctype.h>
+#include <errno.h>
 #include <libgen.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 
 #include "argtable3.h"
@@ -213,6 +215,10 @@ int main(int argc, char ** argv) {
 		goto exit2;
 	}
 
+	if (pledge("stdio rpath wpath cpath", NULL) == -1) {
+		fprintf(stderr,"pledge: error #%d\n", errno);
+		exit(EXIT_FAILURE);
+	}
 
 	// Parse options
 	unsigned long extensions = EXT_SMART | EXT_NOTES | EXT_CRITIC | EXT_TRANSCLUDE;