diff --git a/Cargo.toml b/Cargo.toml
index 8cfef4a..b380a9b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -62,7 +62,7 @@ web-sys = { version = "0.3.72", features = [
   "AudioDataCopyToOptions",
   "AudioSampleFormat",
   "Storage",
-] }
+], optional = true}
 anyhow = "1.0.86"
 byteorder = "1.5.0"
 ogg = "0.9.1"