diff --git a/src/test/java/org/opentripplanner/updater/trip/TimetableSnapshotSourceTest.java b/src/test/java/org/opentripplanner/updater/trip/TimetableSnapshotSourceTest.java
index 95019692c89..f3a1d15dac4 100644
--- a/src/test/java/org/opentripplanner/updater/trip/TimetableSnapshotSourceTest.java
+++ b/src/test/java/org/opentripplanner/updater/trip/TimetableSnapshotSourceTest.java
@@ -1146,6 +1146,7 @@ public void testPurgeExpiredData(
       List.of(tripUpdateYesterday),
       feedId
     );
+    updater.commitTimetableSnapshot(true);
 
     final TimetableSnapshot snapshotA = updater.getTimetableSnapshot();