Index: lttoolbox/lt_restrict.cc
--- lttoolbox/lt_restrict.cc.orig
+++ lttoolbox/lt_restrict.cc
@@ -20,6 +20,9 @@
 #include <lttoolbox/lt_locale.h>
 #include <lttoolbox/string_utils.h>
 
+#include <iostream>
+#include <unistd.h>
+
 void get_symbol(const std::string& s, Alphabet& alpha, const char* prefix,
                 sorted_vector<int32_t>& vec)
 {
@@ -36,6 +39,11 @@ void get_symbol(const std::string& s, Alphabet& alpha,
 
 int main(int argc, char* argv[])
 {
+  if (pledge("stdio rpath wpath cpath", NULL) == -1) {
+    std::cerr << "pledge" << std::endl;
+    return 1;
+  }
+
   LtLocale::tryToSetLocale();
   CLI cli("remove paths from a transducer", PACKAGE_VERSION);
   cli.add_bool_arg('m', "minimise", "minimise transducers after deleting paths");
