Index: apertium/wblank-attach.cc
--- apertium/wblank-attach.cc.orig
+++ apertium/wblank-attach.cc
@@ -21,6 +21,7 @@
 #include <vector>
 #include <algorithm>
 #include <array>
+#include <unistd.h>
 
 void trim_wb(std::string& wb) {
 	while (!wb.empty() && (wb.back() == ';' || wb.back() == ' ')) {
@@ -33,6 +34,11 @@ void trim_wb(std::string& wb) {
 }
 
 int main(int argc, char* argv[]) {
+	if (pledge("stdio rpath wpath cpath", NULL) == -1) {
+		std::cerr << "pledge" << std::endl;
+		return 1;
+	}
+
 	// Ignore -z, but anything else just show what this tool does
 	if (argc > 1 && argv[1][1] != 'z') {
 		std::cout << "Distributes word-bound blanks across all tokens they encompass, turning [[A]]^...$^...$[[/]] into [[A]]^...$[[A]]^...$\n";