--- a/apps/blockchain-node/src/aitbc_chain/consensus/poa.py
+++ b/apps/blockchain-node/src/aitbc_chain/consensus/poa.py
@@ -101,7 +101,7 @@
                 # Wait for interval before proposing next block
                 await asyncio.sleep(self.config.interval_seconds)
                 
-                self._propose_block()
+                await self._propose_block()
                 
         except asyncio.CancelledError:
             pass