diff --git a/plugins/dfu/dfu.quirk b/plugins/dfu/dfu.quirk
index 11f61b026..6a2f3536d 100644
--- a/plugins/dfu/dfu.quirk
+++ b/plugins/dfu/dfu.quirk
@@ -414,3 +414,13 @@ RemoveDelay = 90000
 Plugin = dfu
 Flags = manifest-poll
 RemoveDelay = 90000
+
+# Poly Studio P21
+[USB\VID_095D&PID_9298]
+Plugin = dfu
+Flags = manifest-poll
+RemoveDelay = 9000
+[USB\VID_095D&PID_9299]
+Plugin = dfu
+Flags = manifest-poll
+RemoveDelay = 9000