diff --git a/src/ast_commands.hpp b/src/ast_commands.hpp
index f4cd0a9..32dba64 100644
--- a/src/ast_commands.hpp
+++ b/src/ast_commands.hpp
@@ -21,10 +21,16 @@
 using x3::char_;
 using x3::double_;
 using x3::expect;
-using x3::int_;
+using x3::int8;
+using x3::int16;
+using x3::int32;
+using x3::int64;
 using x3::lexeme;
 using x3::lit;
-using x3::uint_;
+using x3::uint8;
+using x3::uint16;
+using x3::uint32;
+using x3::uint64;
 
 struct parser_context_tag;