diff --git a/eth_anchor.py b/eth_anchor.py
index fbc8761..9478a21 100644
--- a/eth_anchor.py
+++ b/eth_anchor.py
@@ -131,7 +131,7 @@ class EthereumAnchor:
             ).build_transaction({
                 'from':  account.address,
                 'nonce': self.w3.eth.get_transaction_count(account.address),
-                'gas':   200000,
+                'gas':   500000,
             })
 
             # Sign and send