diff --git a/etc/env/base/chain.toml b/etc/env/base/chain.toml
index 181c7cc8632..a792bfdf443 100644
--- a/etc/env/base/chain.toml
+++ b/etc/env/base/chain.toml
@@ -57,7 +57,7 @@ compute_overhead_part=0.0
 # The constant that represents the possibility that a batch can be sealed because of overuse of pubdata.
 # It has range from 0 to 1. If it is 0, the pubdata will not depend on the cost for closing the batch.
 # If it is 1, the pubdata limit per batch will have to cover the entire cost of closing the batch.
-pubdata_overhead_part=1.0
+pubdata_overhead_part=1
 
 # The constant amount of L1 gas that is used as the overhead for the batch. It includes the price for batch verification, etc.
 batch_overhead_l1_gas=800000
@@ -68,14 +68,14 @@ max_gas_per_batch=200000000
 # The maximum amount of pubdata that can be used by the batch. Note that if the calldata is used as pubdata, this variable should not exceed 128kb.
 max_pubdata_per_batch=100000
 
-# The version of the fee model to use. 
+# The version of the fee model to use.
 # - `V1`, the first model that was used in zkSync Era. In this fee model, the pubdata price must be pegged to the L1 gas price.
 # Also, the fair L2 gas price is expected to only include the proving/computation price for the operator and not the costs that come from
 # processing the batch on L1.
 # - `V2`, the second model that was used in zkSync Era. There the pubdata price might be independent from the L1 gas price. Also,
 # The fair L2 gas price is expected to both the proving/computation price for the operator and the costs that come from
 # processing the batch on L1.
-fee_model_version="V1"
+fee_model_version="V2"
 
 # Max number of computational gas that validation step is allowed to take.
 validation_computational_gas_limit=300000
diff --git a/etc/env/base/eth_sender.toml b/etc/env/base/eth_sender.toml
index f95a70c5f96..af1b019c706 100644
--- a/etc/env/base/eth_sender.toml
+++ b/etc/env/base/eth_sender.toml
@@ -62,3 +62,4 @@ pricing_formula_parameter_b=1.0005
 internal_l1_pricing_multiplier=0.8
 # Node polling period in seconds.
 poll_period=5
+# internal_enforced_l1_gas_price = 45_000_000_000
diff --git a/infrastructure/zk/src/init.ts b/infrastructure/zk/src/init.ts
index cdaeb5ea99f..1b96cd4df36 100644
--- a/infrastructure/zk/src/init.ts
+++ b/infrastructure/zk/src/init.ts
@@ -34,6 +34,30 @@ export async function init(initArgs: InitArgs = DEFAULT_ARGS) {
     fs.writeFileSync(process.env.ENV_FILE!, envFileContent);
     await announced(`Initializing in ${validiumMode ? 'Validium mode' : 'Roll-up mode'}`);
 
+    const filePath = 'etc/env/base/chain.toml';
+    const paramName = {
+        pubdata_overhead_part: validiumMode ? 0.0 : 1.0,
+        batch_overhead_l1_gas: validiumMode ? 1000000 : 800000,
+        max_pubdata_per_batch: validiumMode ? 1000000000000 : 100000
+    };
+
+    let tomlContent = fs.readFileSync(filePath, 'utf-8');
+    const lines = tomlContent.split('\n');
+
+    for (let i = 0; i < lines.length; i++) {
+        const line = lines[i];
+        for (const [key, value] of Object.entries(paramName)) {
+            if (line.includes(`${key}=`)) {
+                lines[i] = `${key}=${value}`;
+                break;
+            }
+        }
+    }
+    tomlContent = lines.join('\n');
+    fs.writeFileSync(filePath, tomlContent);
+
+    console.log(`The parameters have been updated in the ${filePath} file.`);
+
     if (!process.env.CI && !skipEnvSetup) {
         await announced('Pulling images', docker.pull());
         await announced('Checking environment', checkEnv());