diff --git a/judgels-backends/judgels-server-app/src/main/java/judgels/sandalphon/submission/programming/BaseSubmissionStore.java b/judgels-backends/judgels-server-app/src/main/java/judgels/sandalphon/submission/programming/BaseSubmissionStore.java
index 175b61a8f..14e9c9868 100644
--- a/judgels-backends/judgels-server-app/src/main/java/judgels/sandalphon/submission/programming/BaseSubmissionStore.java
+++ b/judgels-backends/judgels-server-app/src/main/java/judgels/sandalphon/submission/programming/BaseSubmissionStore.java
@@ -74,6 +74,7 @@ public List<Submission> getSubmissionsForScoreboard(
                 .select()
                 .whereContainerIs(containerJid)
                 .whereLastSubmissionIs(lastSubmissionId)
+                .orderBy(UnmodifiableModel_.ID, OrderDir.ASC)
                 .all();
         Set<String> submissionJids = submissionModels.stream().map(m -> m.jid).collect(Collectors.toSet());