diff --git a/materialize-postgres/driver.go b/materialize-postgres/driver.go
index b2af00631f..bc27a4e40c 100644
--- a/materialize-postgres/driver.go
+++ b/materialize-postgres/driver.go
@@ -664,46 +664,44 @@ func (d *transactor) Store(it *m.StoreIterator) (_ m.StartCommitFunc, err error)
 
 	defuser.Defuse()
 	return func(ctx context.Context, runtimeCheckpoint *protocol.Checkpoint) (*pf.ConnectorState, m.OpFuture) {
-		return nil, m.RunAsyncOperation(func() error {
-			defer txn.Rollback(ctx)
+		defer txn.Rollback(ctx)
 
-			var err error
-			if d.store.fence.Checkpoint, err = runtimeCheckpoint.Marshal(); err != nil {
-				return fmt.Errorf("marshalling checkpoint: %w", err)
-			}
+		var err error
+		if d.store.fence.Checkpoint, err = runtimeCheckpoint.Marshal(); err != nil {
+			return nil, m.FinishedOperation(fmt.Errorf("marshalling checkpoint: %w", err))
+		}
 
-			var fenceUpdate strings.Builder
-			if err := d.templates.updateFence.Execute(&fenceUpdate, d.store.fence); err != nil {
-				return fmt.Errorf("evaluating fence template: %w", err)
-			}
+		var fenceUpdate strings.Builder
+		if err = d.templates.updateFence.Execute(&fenceUpdate, d.store.fence); err != nil {
+			return nil, m.FinishedOperation(fmt.Errorf("evaluating fence template: %w", err))
+		}
 
-			// Add the update to the fence as the last statement in the batch.
-			batch.Queue(fenceUpdate.String())
+		// Add the update to the fence as the last statement in the batch.
+		batch.Queue(fenceUpdate.String())
 
-			results := txn.SendBatch(ctx, &batch)
+		var results = txn.SendBatch(ctx, &batch)
 
-			// Execute all remaining doc inserts & updates.
-			for i := 0; i < batch.Len()-1; i++ {
-				if _, err := results.Exec(); err != nil {
-					return fmt.Errorf("store at index %d: %w", i, err)
-				}
+		// Execute all remaining doc inserts & updates.
+		for i := 0; i < batch.Len()-1; i++ {
+			if _, err = results.Exec(); err != nil {
+				return nil, m.FinishedOperation(fmt.Errorf("store at index %d: %w", i, err))
 			}
+		}
 
-			// The fence update is always the last operation in the batch.
-			if _, err := results.Exec(); err != nil {
-				return fmt.Errorf("updating flow checkpoint: %w", err)
-			} else if err = results.Close(); err != nil {
-				return fmt.Errorf("results.Close(): %w", err)
-			}
+		// The fence update is always the last operation in the batch.
+		if _, err = results.Exec(); err != nil {
+			return nil, m.FinishedOperation(fmt.Errorf("updating flow checkpoint: %w", err))
+		} else if err = results.Close(); err != nil {
+			return nil, m.FinishedOperation(fmt.Errorf("results.Close(): %w", err))
+		}
 
-			commitCtx, cancel := ctxWithQueryTimeout(ctx)
-			defer cancel()
-			if err := txn.Commit(commitCtx); err != nil {
-				return fmt.Errorf("committing Store transaction: %w", err)
-			}
+		var commitCtx, cancel = ctxWithQueryTimeout(ctx)
+		defer cancel()
+		if err = txn.Commit(commitCtx); err != nil {
+			return nil, m.FinishedOperation(fmt.Errorf("committing Store transaction: %w", err))
+		}
 
-			return nil
-		})
+		return nil, nil
 	}, nil
 }