diff --git a/bin/rundler/chain_specs/avax.toml b/bin/rundler/chain_specs/avax.toml
index f8b1001a0..4d346470a 100644
--- a/bin/rundler/chain_specs/avax.toml
+++ b/bin/rundler/chain_specs/avax.toml
@@ -1,7 +1,3 @@
-name = "Avax"
-id = 43114
+name = "BeraChain Bartio"
+id = 80084
 
-# Intrinsic cost + overhead of non-reentry storage without refund
-transaction_intrinsic_gas = "0x5DC0" # 24_000
-# Extra cost of a deploy without refunds
-per_user_op_deploy_overhead_gas = "0x4E20" # 20_000
diff --git a/bin/rundler/chain_specs/bera_bartio.toml b/bin/rundler/chain_specs/bera_bartio.toml
new file mode 100644
index 000000000..bc9485957
--- /dev/null
+++ b/bin/rundler/chain_specs/bera_bartio.toml
@@ -0,0 +1,3 @@
+name = "Bera Bartio"
+id = 80084
+
diff --git a/bin/rundler/src/cli/chain_spec.rs b/bin/rundler/src/cli/chain_spec.rs
index f8e0d2bff..9ca5a75c4 100644
--- a/bin/rundler/src/cli/chain_spec.rs
+++ b/bin/rundler/src/cli/chain_spec.rs
@@ -122,5 +122,6 @@ define_hardcoded_chain_specs!(
     polygon,
     polygon_amoy,
     avax,
+    bera_bartio,
     avax_fuji
 );