diff --git a/pybtc/connector/block_loader.py b/pybtc/connector/block_loader.py
index 57d6c7c..f5a7606 100644
--- a/pybtc/connector/block_loader.py
+++ b/pybtc/connector/block_loader.py
@@ -44,6 +44,7 @@ class BlockLoader:
                 else:
                     # clear unused cache
                     if self.parent.block_preload._store:
+                        self.log.warning(">>>" + str(next(iter(self.parent.block_preload._store))))
                         if next(iter(self.parent.block_preload._store)) <= self.parent.last_block_height:
                             for i in range(next(iter(self.parent.block_preload._store)),
                                            self.parent.last_block_height + 1):