diff --git a/core/src/main/java/google/registry/backup/CommitLogCheckpointAction.java b/core/src/main/java/google/registry/backup/CommitLogCheckpointAction.java
index 27be6aeea..0800d5c37 100644
--- a/core/src/main/java/google/registry/backup/CommitLogCheckpointAction.java
+++ b/core/src/main/java/google/registry/backup/CommitLogCheckpointAction.java
@@ -17,7 +17,7 @@ package google.registry.backup;
 import static google.registry.backup.ExportCommitLogDiffAction.LOWER_CHECKPOINT_TIME_PARAM;
 import static google.registry.backup.ExportCommitLogDiffAction.UPPER_CHECKPOINT_TIME_PARAM;
 import static google.registry.model.ofy.ObjectifyService.auditedOfy;
-import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
+import static google.registry.persistence.transaction.TransactionManagerFactory.ofyTm;
 import static google.registry.util.DateTimeUtils.isBeforeOrAt;
 
 import com.google.common.collect.ImmutableMultimap;
@@ -67,7 +67,8 @@ public final class CommitLogCheckpointAction implements Runnable {
     final CommitLogCheckpoint checkpoint = strategy.computeCheckpoint();
     logger.atInfo().log(
         "Generated candidate checkpoint for time: %s", checkpoint.getCheckpointTime());
-    tm().transact(
+    ofyTm()
+        .transact(
             () -> {
               DateTime lastWrittenTime = CommitLogCheckpointRoot.loadRoot().getLastWrittenTime();
               if (isBeforeOrAt(checkpoint.getCheckpointTime(), lastWrittenTime)) {
diff --git a/core/src/main/java/google/registry/backup/DeleteOldCommitLogsAction.java b/core/src/main/java/google/registry/backup/DeleteOldCommitLogsAction.java
index 9a340929d..e3aaf19ee 100644
--- a/core/src/main/java/google/registry/backup/DeleteOldCommitLogsAction.java
+++ b/core/src/main/java/google/registry/backup/DeleteOldCommitLogsAction.java
@@ -18,7 +18,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 import static com.google.common.base.Preconditions.checkState;
 import static google.registry.mapreduce.MapreduceRunner.PARAM_DRY_RUN;
 import static google.registry.model.ofy.ObjectifyService.auditedOfy;
-import static google.registry.persistence.transaction.TransactionManagerFactory.tm;
+import static google.registry.persistence.transaction.TransactionManagerFactory.ofyTm;
 import static java.lang.Boolean.FALSE;
 import static java.lang.Boolean.TRUE;
 
@@ -288,7 +288,8 @@ public final class DeleteOldCommitLogsAction implements Runnable {
       }
 
       DeletionResult deletionResult =
-          tm().transactNew(
+          ofyTm()
+              .transactNew(
                   () -> {
                     CommitLogManifest manifest = auditedOfy().load().key(manifestKey).now();
                     // It is possible that the same manifestKey was run twice, if a shard had to be