diff --git a/build.zig.zon b/build.zig.zon
index 404b2f1..a1535e9 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,12 +5,12 @@
 
     .fingerprint = 0x1c84f6455a54f043, // Changing this has security and trust implications.
 
-    .minimum_zig_version = "0.16.0-dev.1334+06d08daba",
+    .minimum_zig_version = "0.16.0-dev.1456+16fc083f2",
 
     .dependencies = .{
         .aro = .{
-            .url = "git+https://github.com/Vexu/arocc#d84be01a6a85ac91f51b3ad7647ca356db3f3c76",
-            .hash = "aro-0.0.0-JSD1QvVvNgCxkaLWsgk1JClDUgsxTcPrUo43odmNIGT2",
+            .url = "git+https://github.com/Vexu/arocc#967f8b03ea19f43f8c1c009d7c1f5398bbd79246",
+            .hash = "aro-0.0.0-JSD1Qi2TNgAqcz8WhBqh5B4FcjLw2WZCvRMqPfT8Q9gY",
         },
     },
 
diff --git a/lib/helpers.zig b/lib/helpers.zig
index 5f6a556..37bb2ee 100644
--- a/lib/helpers.zig
+++ b/lib/helpers.zig
@@ -85,16 +85,13 @@ fn ToUnsigned(comptime T: type) type {
 pub fn FlexibleArrayType(comptime SelfType: type, comptime ElementType: type) type {
     switch (@typeInfo(SelfType)) {
         .pointer => |ptr| {
-            return @Type(.{ .pointer = .{
-                .size = .c,
-                .is_const = ptr.is_const,
-                .is_volatile = ptr.is_volatile,
-                .alignment = @alignOf(ElementType),
-                .address_space = .generic,
-                .child = ElementType,
-                .is_allowzero = true,
-                .sentinel_ptr = null,
-            } });
+            return @Pointer(.c, .{
+                .@"const" = ptr.is_const,
+                .@"volatile" = ptr.is_volatile,
+                .@"allowzero" = true,
+                .@"addrspace" = .generic,
+                .@"align" = @alignOf(ElementType),
+            }, ElementType, null);
         },
         else => |info| @compileError("Invalid self type \"" ++ @tagName(info) ++ "\" for flexible array getter: " ++ @typeName(SelfType)),
     }
@@ -219,7 +216,7 @@ fn castInt(comptime DestType: type, target: anytype) DestType {
     const dest = @typeInfo(DestType).int;
     const source = @typeInfo(@TypeOf(target)).int;
 
-    const Int = @Type(.{ .int = .{ .bits = dest.bits, .signedness = source.signedness } });
+    const Int = @Int(source.signedness, dest.bits);
 
     if (dest.bits < source.bits)
         return @as(DestType, @bitCast(@as(Int, @truncate(target))))
diff --git a/src/Translator.zig b/src/Translator.zig
index 80ddd5c..bf3f5a1 100644
--- a/src/Translator.zig
+++ b/src/Translator.zig
@@ -2241,6 +2241,10 @@ fn transExpr(t: *Translator, scope: *Scope, expr: Node.Index, used: ResultUsed)
         .builtin_convertvector => |convertvector| try t.transConvertvectorExpr(scope, convertvector),
         .builtin_shufflevector => |shufflevector| try t.transShufflevectorExpr(scope, shufflevector),
 
+        .builtin_va_arg_pack, .builtin_va_arg_pack_len => |va_arg_pack| {
+            return t.fail(error.UnsupportedTranslation, va_arg_pack.builtin_tok, "TODO va arg pack", .{});
+        },
+
         .compound_stmt,
         .static_assert,
         .return_stmt,