diff --git a/crates/apollo_rpc_execution/src/lib.rs b/crates/apollo_rpc_execution/src/lib.rs
index f09649d2404..6b3337a9f1b 100644
--- a/crates/apollo_rpc_execution/src/lib.rs
+++ b/crates/apollo_rpc_execution/src/lib.rs
@@ -394,6 +394,7 @@ fn create_block_context(
             strk_fee_token_address: execution_config.strk_fee_contract_address,
             eth_fee_token_address: execution_config.eth_fee_contract_address,
         },
+        is_l3: false,
     };
     let starknet_version = storage_reader
         .begin_ro_txn()?
diff --git a/crates/blockifier/src/context.rs b/crates/blockifier/src/context.rs
index 26be952d339..8ce89ad3312 100644
--- a/crates/blockifier/src/context.rs
+++ b/crates/blockifier/src/context.rs
@@ -200,6 +200,8 @@ impl BlockContext {
 pub struct ChainInfo {
     pub chain_id: ChainId,
     pub fee_token_addresses: FeeTokenAddresses,
+    #[serde(default)]
+    pub is_l3: bool,
 }
 
 impl ChainInfo {
@@ -217,6 +219,7 @@ impl Default for ChainInfo {
             // TODO(guyn): should we remove the default value for chain_id?
             chain_id: ChainId::Other("0x0".to_string()),
             fee_token_addresses: FeeTokenAddresses::default(),
+            is_l3: false,
         }
     }
 }
diff --git a/crates/blockifier/src/test_utils/struct_impls.rs b/crates/blockifier/src/test_utils/struct_impls.rs
index 9ee95ad0323..c405f2ff491 100644
--- a/crates/blockifier/src/test_utils/struct_impls.rs
+++ b/crates/blockifier/src/test_utils/struct_impls.rs
@@ -168,6 +168,7 @@ impl ChainInfo {
                 eth_fee_token_address: contract_address!(TEST_ERC20_CONTRACT_ADDRESS),
                 strk_fee_token_address: contract_address!(TEST_ERC20_CONTRACT_ADDRESS2),
             },
+            is_l3: false,
         }
     }
 }
diff --git a/crates/blockifier_reexecution/src/state_reader/utils.rs b/crates/blockifier_reexecution/src/state_reader/utils.rs
index a8aa7b6e45a..ecd2eceb09b 100644
--- a/crates/blockifier_reexecution/src/state_reader/utils.rs
+++ b/crates/blockifier_reexecution/src/state_reader/utils.rs
@@ -67,7 +67,11 @@ pub fn get_rpc_state_reader_config() -> RpcStateReaderConfig {
 
 /// Returns the chain info of mainnet.
 pub fn get_chain_info(chain_id: &ChainId) -> ChainInfo {
-    ChainInfo { chain_id: chain_id.clone(), fee_token_addresses: get_fee_token_addresses(chain_id) }
+    ChainInfo {
+        chain_id: chain_id.clone(),
+        fee_token_addresses: get_fee_token_addresses(chain_id),
+        is_l3: false,
+    }
 }
 
 // TODO(Aner): import the following functions instead, to reduce code duplication.
diff --git a/crates/native_blockifier/src/py_block_executor.rs b/crates/native_blockifier/src/py_block_executor.rs
index e03837e8857..beac6f24391 100644
--- a/crates/native_blockifier/src/py_block_executor.rs
+++ b/crates/native_blockifier/src/py_block_executor.rs
@@ -453,6 +453,7 @@ impl TryFrom<PyOsConfig> for ChainInfo {
                     py_os_config.fee_token_address.0,
                 )?,
             },
+            is_l3: false,
         })
     }
 }