diff --git a/pybtc/connector/block_loader.py b/pybtc/connector/block_loader.py
index c3b0c3a..0b17505 100644
--- a/pybtc/connector/block_loader.py
+++ b/pybtc/connector/block_loader.py
@@ -209,8 +209,8 @@ class Worker:
         self.loop.set_default_executor(ThreadPoolExecutor(20))
         self.out_writer = out_writer
         self.in_reader = in_reader
-        self.coins = LRU(100000)
-        self.destroyed_coins = LRU(100000)
+        self.coins = LRU(300000)
+        self.destroyed_coins = LRU(300000)
         signal.signal(signal.SIGTERM, self.terminate)
         self.loop.create_task(self.message_loop())
         self.loop.run_forever()