diff --git a/build.zig b/build.zig
index 4f66a36..72eeb44 100644
--- a/build.zig
+++ b/build.zig
@@ -49,14 +49,9 @@ pub fn build(b: *std.Build) !void {
         .settings = emcc_settings,
         .out_file_name = "zorth.mjs",
         .install_dir = .prefix,
+        .js_library_path = b.path("node_modules/xterm-pty/emscripten-pty.js"),
     });
 
-    var emcc: *std.Build.Step.Run = @fieldParentPtr("step", emcc_step.dependencies.getLast());
-    const js_library_path = b.path("node_modules/xterm-pty/emscripten-pty.js");
-    emcc.addArg("--js-library");
-    emcc.addFileArg(js_library_path);
-    emcc.addFileInput(js_library_path);
-
     inline for (.{
         "demo/index.html",
         "node_modules/coi-serviceworker/coi-serviceworker.min.js",
diff --git a/build.zig.zon b/build.zig.zon
index d1ed964..fcf48c6 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -9,8 +9,8 @@
             .hash = "N-V-__8AAFOvDwCo7taCCai1-7vIWbazjhzpIv6NqgJtSZ63",
         },
         .zemscripten = .{
-            .url = "git+https://github.com/zig-gamedev/zemscripten#00da03b188220374a57cb34cda6230b8d53737ea",
-            .hash = "zemscripten-0.2.0-dev-sRlDqFJSAAB8hgnRt5DDMKP3zLlDtMnUDwYRJVCa5lGY",
+            .url = "git+https://github.com/zig-gamedev/zemscripten#f724af6f533ee30e1d39e5cd085e1cd50f0573e8",
+            .hash = "zemscripten-0.2.0-dev-sRlDqCxSAADjjPPdFi6yIUxcZn8_q8PP4OtdtIWgQgRK",
         },
     },
     .paths = .{