diff --git a/content/30.python/40.api/30.contracts/00.index.md b/content/30.python/40.api/30.contracts/00.index.md
index 1a003e2..e5a625d 100644
--- a/content/30.python/40.api/30.contracts/00.index.md
+++ b/content/30.python/40.api/30.contracts/00.index.md
@@ -112,6 +112,7 @@ def deploy_contract(
         gas_limit=0,  # UNKNOWN AT THIS STATE
         gas_price=gas_price,
         bytecode=storage_contract.bytecode,
+        max_priority_fee_per_gas=0, # if testnet
     )
 
     # ZkSync transaction gas estimation
@@ -247,7 +248,8 @@ _web3.zksync.gas_price
                                          gas_limit=0,
                                          gas_price=gas_price,
                                          bytecode=storage_contract.bytecode,
-                                         salt=random_salt)
+                                         salt=random_salt,
+                                         max_priority_fee_per_gas=0)
 
     # ZkSync transaction gas estimation
     estimate_gas = zk_web3.zksync.eth_estimate_gas(create2_contract.tx)