diff --git a/examples/fib/build.zig b/examples/fib/build.zig
index 0a2e56d8..b4dae9cc 100644
--- a/examples/fib/build.zig
+++ b/examples/fib/build.zig
@@ -1,6 +1,6 @@
-const Builder = @import("std").build.Builder;
+const Build = @import("std").Build;
 
-pub fn build(b: *Builder) void {
+pub fn build(b: *Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
@@ -10,8 +10,8 @@ pub fn build(b: *Builder) void {
         .target = target,
         .optimize = optimize,
     });
-    exe.addAnonymousModule("zware", .{
-        .source_file = .{ .path = "../../src/main.zig" },
+    exe.root_module.addAnonymousImport("zware", .{
+        .root_source_file = .{ .path = "../../src/main.zig" },
     });
     b.installArtifact(exe);
 
diff --git a/test/interface/build.zig b/test/interface/build.zig
index c3a5b4c8..fa8ce780 100644
--- a/test/interface/build.zig
+++ b/test/interface/build.zig
@@ -1,6 +1,6 @@
-const Builder = @import("std").build.Builder;
+const Build = @import("std").Build;
 
-pub fn build(b: *Builder) void {
+pub fn build(b: *Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
@@ -10,8 +10,8 @@ pub fn build(b: *Builder) void {
         .target = target,
         .optimize = optimize,
     });
-    exe.addAnonymousModule("zware", .{
-        .source_file = .{ .path = "../../src/main.zig" },
+    exe.root_module.addAnonymousImport("zware", .{
+        .root_source_file = .{ .path = "../../src/main.zig" },
     });
     b.installArtifact(exe);
 
diff --git a/test/parsecheck/build.zig b/test/parsecheck/build.zig
index fa711634..b66e3942 100644
--- a/test/parsecheck/build.zig
+++ b/test/parsecheck/build.zig
@@ -1,6 +1,6 @@
-const Builder = @import("std").build.Builder;
+const Build = @import("std").Build;
 
-pub fn build(b: *Builder) void {
+pub fn build(b: *Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
@@ -10,8 +10,8 @@ pub fn build(b: *Builder) void {
         .target = target,
         .optimize = optimize,
     });
-    exe.addAnonymousModule("zware", .{
-        .source_file = .{ .path = "../../src/main.zig" },
+    exe.root_module.addAnonymousImport("zware", .{
+        .root_source_file = .{ .path = "../../src/main.zig" },
     });
     b.installArtifact(exe);
 
diff --git a/test/parsecheck/src/parsecheck.zig b/test/parsecheck/src/parsecheck.zig
index 09cc0192..8e8034df 100644
--- a/test/parsecheck/src/parsecheck.zig
+++ b/test/parsecheck/src/parsecheck.zig
@@ -12,17 +12,27 @@ const GeneralPurposeAllocator = std.heap.GeneralPurposeAllocator;
 const ArenaAllocator = std.heap.ArenaAllocator;
 var gpa = GeneralPurposeAllocator(.{}){};
 
+const native_os = @import("builtin").os.tag;
+
 pub fn main() !void {
-    var args = process.args();
+    defer _ = gpa.deinit();
+    
+    var args = switch (native_os) {
+        .windows, .wasi => try process.ArgIterator.initWithAllocator(gpa.allocator()),
+        else => process.ArgIterator.init(),
+    };
+    defer args.deinit();
+    
     _ = args.skip();
     const directory = args.next() orelse return error.NoFilename;
 
-    defer _ = gpa.deinit();
-
     var wasm_files = ArrayList([]const u8).init(gpa.allocator());
     defer wasm_files.deinit();
 
-    var dir = try std.fs.cwd().openIterableDir(directory, .{});
+    var dir = try std.fs.cwd().openDir(directory, .{
+        .no_follow = true,
+        .iterate = true,
+    });
     defer dir.close();
 
     var it = dir.iterate();
@@ -36,7 +46,7 @@ pub fn main() !void {
             defer _ = arena.deinit();
             const alloc = arena.allocator();
 
-            const program = try dir.dir.readFileAlloc(alloc, entry.name, 0xFFFFFFF);
+            const program = try dir.readFileAlloc(alloc, entry.name, 0xFFFFFFF);
             if (program.len == 0) continue;
 
             var store: Store = Store.init(alloc);
diff --git a/tools/zware-gen/build.zig b/tools/zware-gen/build.zig
index 8a494632..77657ae3 100644
--- a/tools/zware-gen/build.zig
+++ b/tools/zware-gen/build.zig
@@ -1,6 +1,6 @@
-const Builder = @import("std").build.Builder;
+const Build = @import("std").Build;
 
-pub fn build(b: *Builder) void {
+pub fn build(b: *Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
@@ -10,8 +10,8 @@ pub fn build(b: *Builder) void {
         .target = target,
         .optimize = optimize,
     });
-    exe.addAnonymousModule("zware", .{
-        .source_file = .{ .path = "../../src/main.zig" },
+    exe.root_module.addAnonymousImport("zware", .{
+        .root_source_file = .{ .path = "../../src/main.zig" },
     });
     b.installArtifact(exe);