diff --git a/backend/internal/server/api_contract_test.go b/backend/internal/server/api_contract_test.go
index 0a0bc455..b9422b4a 100644
--- a/backend/internal/server/api_contract_test.go
+++ b/backend/internal/server/api_contract_test.go
@@ -922,6 +922,10 @@ func (r *stubUsageLogRepo) GetUserUsageTrend(ctx context.Context, startTime, end
 	return nil, errors.New("not implemented")
 }
 
+func (r *stubUsageLogRepo) GetUserStatsAggregated(ctx context.Context, userID int64, startTime, endTime time.Time) (*usagestats.UsageStats, error) {
+	return nil, errors.New("not implemented")
+}
+
 func (r *stubUsageLogRepo) GetApiKeyStatsAggregated(ctx context.Context, apiKeyID int64, startTime, endTime time.Time) (*usagestats.UsageStats, error) {
 	return nil, errors.New("not implemented")
 }