diff --git a/generate.zig b/generate.zig
index fc914f7b763bcc34e38d2e6ebff341c883f709c6..c21ca3879dc20797e8da92bba1673e6058e09dde 100644
--- a/generate.zig
+++ b/generate.zig
@@ -59,6 +59,9 @@ pub fn main() !void {
     for (zones.items) |z| {
         try out_w.print("    {},\n", .{FormatId{ .bytes = z }});
     }
+    try out_w.writeAll("\n");
+    try out_w.writeAll("    pub const BaseType = []const u8;\n");
+    try out_w.writeAll("    pub const default: @This() = .@\"Etc/UTC\";\n");
     try out_w.writeAll("};\n");
     try out_w.flush();
 }
diff --git a/zone.zig b/zone.zig
index b1f7aeabc9c6d559bc49ce92230d564e24d00a01..34fcfeaa12a7eb294e353cc101ca909d80223790 100644
--- a/zone.zig
+++ b/zone.zig
@@ -314,4 +314,7 @@ pub const Zone = enum {
     @"Pacific/Tahiti",
     @"Pacific/Tarawa",
     @"Pacific/Tongatapu",
+
+    pub const BaseType = []const u8;
+    pub const default: @This() = .@"Etc/UTC";
 };