diff --git a/build.zig b/build.zig
index 7818a0d022613b2a483f21139f145cacadc864ad..636477d8a9a8b8caaa3bac4c156dcc797f9042d7 100644
--- a/build.zig
+++ b/build.zig
@@ -3,16 +3,18 @@ const deps = @import("./deps.zig");
 
 pub fn build(b: *std.build.Builder) void {
     const target = b.standardTargetOptions(.{});
+    const mode = b.option(std.builtin.Mode, "mode", "") orelse .Debug;
 
-    const mode = b.standardReleaseOptions();
-
-    const exe = b.addExecutable("zig-ulid", "main.zig");
-    exe.setTarget(target);
-    exe.setBuildMode(mode);
+    const exe = b.addExecutable(.{
+        .name = "zig-ulid",
+        .root_source_file = .{ .path = "main.zig" },
+        .target = target,
+        .optimize = mode,
+    });
     deps.addAllTo(exe);
-    exe.install();
+    b.installArtifact(exe);
 
-    const run_cmd = exe.run();
+    const run_cmd = b.addRunArtifact(exe);
     run_cmd.step.dependOn(b.getInstallStep());
     if (b.args) |args| {
         run_cmd.addArgs(args);
diff --git a/main.zig b/main.zig
index 743e646323889efd61c4c64ee92bd7317f403620..faf1b91f69117c2ad13b78b5656ab5cd945959df 100644
--- a/main.zig
+++ b/main.zig
@@ -26,7 +26,7 @@ pub fn main() anyerror!void {
 
 fn ensureFromTo(before: string) !void {
     const alloc = std.heap.page_allocator;
-    const ul = try ulid.ULID.fromString(alloc, before);
+    const ul = try ulid.ULID.parse(alloc, before);
     const after = try ul.toString(alloc);
     try std.testing.expectEqualStrings(before, after);
 }