diff --git a/biblio.json b/biblio.json
index 49ec2b9..036bd9b 100644
--- a/biblio.json
+++ b/biblio.json
@@ -51,6 +51,10 @@
 		"href": "https://wicg.github.io/frame-timing/",
 		"title": "Frame Timing"
 	},
+	"IDLE-DETECTION": {
+		"href": "https://wicg.github.io/idle-detection/",
+		"title": "Idle Detection API"
+	},
 	"INPUT-DEVICE-CAPABILITIES": {
 		"href": "https://wicg.github.io/input-device-capabilities/",
 		"title": "Input Device Capabilities"