diff --git a/source/command.zig b/source/command.zig
index c467f7b..26b5364 100644
--- a/source/command.zig
+++ b/source/command.zig
@@ -446,21 +446,21 @@ pub fn CommandBuilder(comptime UserContext: type) type {
                 }
 
                 _ = @Type(.{ .Struct = .{
-                    .layout = .Auto,
+                    .layout = .auto,
                     .fields = tag_fields,
                     .decls = &.{},
                     .is_tuple = false,
                 } });
 
                 _ = @Type(.{ .Struct = .{
-                    .layout = .Auto,
+                    .layout = .auto,
                     .fields = env_var_fields,
                     .decls = &.{},
                     .is_tuple = false,
                 } });
 
                 return @Type(.{ .Struct = .{
-                    .layout = .Auto,
+                    .layout = .auto,
                     .fields = fields,
                     .decls = &.{},
                     .is_tuple = false,
@@ -519,7 +519,7 @@ pub fn CommandBuilder(comptime UserContext: type) type {
                 }
 
                 return @Type(.{ .Struct = .{
-                    .layout = .Auto,
+                    .layout = .auto,
                     .fields = fields,
                     .decls = &.{},
                     .is_tuple = false,
diff --git a/source/meta.zig b/source/meta.zig
index ea3afa6..314daf3 100644
--- a/source/meta.zig
+++ b/source/meta.zig
@@ -265,7 +265,7 @@ pub const TupleBuilder = struct {
             }
 
             return @Type(.{ .Struct = .{
-                .layout = .Auto,
+                .layout = .auto,
                 .fields = &fields,
                 .decls = &.{},
                 .is_tuple = true,