diff --git a/internal/proto/analytics/connections_log.proto b/internal/proto/analytics/connections_log.proto
index 08e1c99e..6dea3e48 100644
--- a/internal/proto/analytics/connections_log.proto
+++ b/internal/proto/analytics/connections_log.proto
@@ -352,6 +352,9 @@ message ConnectionsLog {
     // the device attestation is initiated, to the moment the device attestation
     // is finished.
     optional int64 device_attestation_latency_millis = 14;
+
+    // The error code returned by Play Integrity API during device attestation.
+    optional int64 play_integrity_error_code = 15;
   }
 
   message DeviceInfo {