diff --git a/src/near_lake_framework/__init__.py b/src/near_lake_framework/__init__.py
index af47441..e193a6d 100644
--- a/src/near_lake_framework/__init__.py
+++ b/src/near_lake_framework/__init__.py
@@ -48,7 +48,7 @@ class LakeConfig:
     aws_access_key_id: str
     aws_secret_key: str
     start_block_height: near_primitives.BlockHeight
-    blocks_preload_pool_size: int = 200
+    blocks_preload_pool_size: int
 
     def __init__(  # pylint: disable=too-many-arguments
         self,
@@ -56,8 +56,15 @@ def __init__(  # pylint: disable=too-many-arguments
         aws_access_key_id: str,
         aws_secret_key: str,
         start_block_height: near_primitives.BlockHeight,
-        preload_pool_size: int = 200,
+        preload_pool_size: None = None,
+        block_preload_pool_size: int = 200,
     ):
+        if preload_pool_size:
+            logger.warning(
+                "The 'preload_pool_size' argument is not used and will be deprecated in a "
+                "future release. Use 'blocks_preload_pool_size' instead."
+            )
+
         # These are entirely determined by Network.
         self.s3_bucket_name = f"near-lake-data-{network.value}"
         self.s3_region_name = "eu-central-1"
@@ -65,7 +72,7 @@ def __init__(  # pylint: disable=too-many-arguments
         self.aws_access_key_id = aws_access_key_id
         self.aws_secret_key = aws_secret_key
         self.start_block_height = start_block_height
-        self.preload_pool_size = preload_pool_size
+        self.blocks_preload_pool_size = block_preload_pool_size
 
 
 async def start(config: LakeConfig, streamer_messages_queue: asyncio.Queue):