diff --git a/cmd/stcrashreceiver/sentry.go b/cmd/stcrashreceiver/sentry.go
index 73bfdc969..dadd9f333 100644
--- a/cmd/stcrashreceiver/sentry.go
+++ b/cmd/stcrashreceiver/sentry.go
@@ -40,6 +40,7 @@ type sentryService struct {
 
 type sentryRequest struct {
 	reportID string
+	userID   string
 	data     []byte
 }
 
@@ -52,7 +53,7 @@ func (s *sentryService) Serve(ctx context.Context) {
 				log.Println("Failed to parse crash report:", err)
 				continue
 			}
-			if err := sendReport(s.dsn, pkt, req.reportID); err != nil {
+			if err := sendReport(s.dsn, pkt, req.userID); err != nil {
 				log.Println("Failed to send crash report:", err)
 			}
 
@@ -62,9 +63,9 @@ func (s *sentryService) Serve(ctx context.Context) {
 	}
 }
 
-func (s *sentryService) Send(reportID string, data []byte) bool {
+func (s *sentryService) Send(reportID, userID string, data []byte) bool {
 	select {
-	case s.inbox <- sentryRequest{reportID, data}:
+	case s.inbox <- sentryRequest{reportID, userID, data}:
 		return true
 	default:
 		return false
diff --git a/cmd/stcrashreceiver/stcrashreceiver.go b/cmd/stcrashreceiver/stcrashreceiver.go
index 0c1dcd4e2..0d01ca08d 100644
--- a/cmd/stcrashreceiver/stcrashreceiver.go
+++ b/cmd/stcrashreceiver/stcrashreceiver.go
@@ -87,7 +87,7 @@ func (r *crashReceiver) servePut(reportID string, w http.ResponseWriter, req *ht
 	}
 
 	// Send the report to Sentry
-	if !r.sentry.Send(reportID, bs) {
+	if !r.sentry.Send(reportID, userIDFor(req), bs) {
 		log.Println("Failed to send report to sentry (queue full):", reportID)
 	}
 }