diff --git a/async_substrate_interface/async_substrate.py b/async_substrate_interface/async_substrate.py
index 94abf59..7795630 100644
--- a/async_substrate_interface/async_substrate.py
+++ b/async_substrate_interface/async_substrate.py
@@ -1394,6 +1394,8 @@ async def result_handler(
                     response["result"]["block"], block_data_hash=block_hash
                 )
 
+    get_block_handler = _get_block_handler
+
     async def get_block(
         self,
         block_hash: Optional[str] = None,
diff --git a/async_substrate_interface/sync_substrate.py b/async_substrate_interface/sync_substrate.py
index a3a9f4d..f2265fe 100644
--- a/async_substrate_interface/sync_substrate.py
+++ b/async_substrate_interface/sync_substrate.py
@@ -1141,6 +1141,8 @@ def result_handler(message: dict, subscription_id: str) -> tuple[Any, bool]:
                     response["result"]["block"], block_data_hash=block_hash
                 )
 
+    get_block_handler = _get_block_handler
+
     def get_block(
         self,
         block_hash: Optional[str] = None,