diff --git a/Tests/LibWeb/Text/expected/WebAnimations/animation-methods/updatePlaybackRate.txt b/Tests/LibWeb/Text/expected/WebAnimations/animation-methods/updatePlaybackRate.txt
new file mode 100644
index 00000000000..af23e435270
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/WebAnimations/animation-methods/updatePlaybackRate.txt
@@ -0,0 +1,4 @@
+   updatePlaybackRate() updates an idle animation's playback rate immediately
+updatePlaybackRate() updates a running animation's playback rate after an animation frame
+updatePlaybackRate() updates a paused animation's playback rate after an animation frame
+updatePlaybackRate() updates a finished animation's playback rate after an animation frame
diff --git a/Tests/LibWeb/Text/input/WebAnimations/animation-methods/updatePlaybackRate.html b/Tests/LibWeb/Text/input/WebAnimations/animation-methods/updatePlaybackRate.html
new file mode 100644
index 00000000000..9c68f33bb1d
--- /dev/null
+++ b/Tests/LibWeb/Text/input/WebAnimations/animation-methods/updatePlaybackRate.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<div id="foo"></div>
+<script src="../../include.js"></script>
+<script>
+    const animationFrame = () => {
+        const { promise, resolve } = Promise.withResolvers();
+        requestAnimationFrame(resolve);
+        return promise;
+    }
+
+    asyncTest(async done => {
+		const foo = document.getElementById("foo");
+
+		let anim = foo.animate({}, { duration: Infinity });
+		anim.pause();
+		anim.updatePlaybackRate(2.0);
+		await animationFrame();
+		if (anim.playbackRate !== 2.0)
+			println("updatePlaybackRate() does nothing if the animation is pending");
+
+		anim = foo.animate({}, {});
+		anim.cancel();
+		anim.updatePlaybackRate(2.0);
+		if (anim.playbackRate === 2.0)
+			println("updatePlaybackRate() updates an idle animation's playback rate immediately");
+
+		anim = foo.animate({}, {});
+		await animationFrame();
+		anim.updatePlaybackRate(2.0);
+		if (anim.playbackRate === 2.0)
+			println("updatePlaybackRate() updates a running animation's playback rate after an animation frame");
+
+		anim = foo.animate({}, {});
+		anim.pause();
+		await animationFrame();
+		anim.updatePlaybackRate(2.0);
+		if (anim.playbackRate === 2.0)
+			println("updatePlaybackRate() updates a paused animation's playback rate after an animation frame");
+
+		anim = foo.animate({}, {});
+		anim.finish();
+		await animationFrame();
+		anim.updatePlaybackRate(2.0);
+		if (anim.playbackRate === 2.0)
+			println("updatePlaybackRate() updates a finished animation's playback rate after an animation frame");
+
+        done();
+    });
+</script>
