diff --git a/asyncglk b/asyncglk
index f173344..bef7f5a 160000
--- a/asyncglk
+++ b/asyncglk
@@ -1 +1 @@
-Subproject commit f17334454d398be419a62e8815e69078046b6d95
+Subproject commit bef7f5adb404649d2775e160e0df205437a0bc2f
diff --git a/remglk b/remglk
index 290eb47..68f301a 160000
--- a/remglk
+++ b/remglk
@@ -1 +1 @@
-Subproject commit 290eb476402eab662a7d79976b2a5a90cc2f1d17
+Subproject commit 68f301ae183e9f8095dde98c7cfd5fbddb16375d
diff --git a/tools/write-file-sizes.js b/tools/write-file-sizes.js
index d836357..fdc48df 100755
--- a/tools/write-file-sizes.js
+++ b/tools/write-file-sizes.js
@@ -5,18 +5,26 @@
 import * as fs from 'fs'
 import {dirname, resolve} from 'path'
 import {fileURLToPath} from 'url'
+import {gzipSync} from 'zlib'
 
-const results = {
-    files: {},
-    files_gz: {},
-};
+const results = {};
+
+function add_file(name, path) {
+    const data = fs.readFileSync(path)
+    const data_gz = gzipSync(data)
+    results[name] = {
+        size: data.length,
+        gz: data_gz.length,
+    }
+}
 
 const build_path = resolve(dirname(fileURLToPath(import.meta.url)), '../build')
 for (const file of fs.readdirSync(build_path)) {
-    if (file.endsWith('.js') || file.endsWith('.wasm')) {
-        results.files[file] = fs.statSync(resolve(build_path, file)).size
-        // TODO: gzipped size
+    if (file.endsWith('.wasm')) {
+        add_file(file, resolve(build_path, file))
     }
 }
 
+add_file('glkaudio_bg.wasm', resolve(build_path, '../asyncglk/src/glkaudio/pkg/glkaudio_bg.wasm'))
+
 fs.writeFileSync(resolve(build_path, 'file-sizes.json'), JSON.stringify(results))
\ No newline at end of file