--- src/Numbertext.cxx
+++ src/Numbertext.cxx
@@ -41,7 +41,14 @@
     std::wifstream wif(filename);
     if (wif.fail())
         return false;
+#if defined __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
     wif.imbue(std::locale(std::locale(), new std::codecvt_utf8<wchar_t>));
+#if defined __GNUC__
+#pragma GCC diagnostic pop
+#endif
     std::wstringstream wss;
     wss << wif.rdbuf();
     result = wss.str();