@@ -79,10 +79,15 @@
 	[_conn executeStatement: @"CREATE TABLE IF NOT EXISTS next_batch (\n"
 				 @"    device_id TEXT PRIMARY KEY,\n"
 				 @"    next_batch TEXT\n"
 				 @")"];
 }
+
+- (void)transactionWithBlock: (mtx_storage_transaction_block_t)block
+{
+	[_conn transactionWithBlock: block];
+}
 
 - (void)setNextBatch: (OFString *)nextBatch
 	 forDeviceID: (OFString *)deviceID
 {
 	void *pool = objc_autoreleasePoolPush();