Index: src/LYMain.c
--- src/LYMain.c.orig
+++ src/LYMain.c
@@ -2155,6 +2155,22 @@ int main(int argc,
     }
 
     /*
+     * Disabling features requiring 'proc' + 'exec' and calling pledge
+     */
+    no_editor = TRUE;
+    no_exec = TRUE;
+    no_mail = TRUE;
+    no_shell = TRUE;
+
+    rlogin_ok = FALSE;
+    telnet_ok = FALSE;
+
+    if (pledge("stdio rpath wpath cpath fattr dns inet tty", NULL) == -1) {
+	fprintf(stderr, "%s: pledge: %s\n", getprogname(), strerror(errno));
+	exit_immediately(EXIT_FAILURE);
+    }
+
+    /*
      * Here's where we do all the work.
      */
     if (dump_output_immediately) {