diff --git a/crates/audio-context-napi/Cargo.toml b/crates/audio-context-napi/Cargo.toml
index e9b6f85e..b9adc2d3 100644
--- a/crates/audio-context-napi/Cargo.toml
+++ b/crates/audio-context-napi/Cargo.toml
@@ -17,7 +17,7 @@ napi7 = ["napi/napi7"]
 [dependencies]
 napi = { version = "3.13.0", default-features = false, features = ["dyn-symbols"] }
 napi-derive = "3.6.9"
-web-audio-api = "1.7.0"
+web-audio-api = "1.8.0"
 base64 = "0.22.1"
 
 [build-dependencies]
diff --git a/crates/audio-context-napi/__test__/audio.test.mjs b/crates/audio-context-napi/__test__/audio.test.mjs
index 9e7f4173..0420b62b 100644
--- a/crates/audio-context-napi/__test__/audio.test.mjs
+++ b/crates/audio-context-napi/__test__/audio.test.mjs
@@ -39,7 +39,9 @@ test('renders an oscillator through a gain offline', async () => {
 	assert.equal(rendered.length, 4800);
 	assert.equal(rendered.numberOfChannels, 1);
 	const samples = rendered.channelData(0);
-	assert.ok(Math.abs(rms(samples.subarray(480)) - 0.5) < 0.02, `rms ${rms(samples)}`);
+	// The square is the spec's normalized PeriodicWave (peak 1, RMS about 0.83), as in Chrome.
+	const level = rms(samples.subarray(480));
+	assert.ok(Math.abs(level - 0.415) < 0.01, `rms ${level}`);
 	assert.equal(context.state, 'closed');
 	await assert.rejects(async () => context.startRendering(), /InvalidStateError/);
 });