diff --git a/packages/protocol/package.json b/packages/protocol/package.json
index d380064d187..75388cfd916 100644
--- a/packages/protocol/package.json
+++ b/packages/protocol/package.json
@@ -20,7 +20,7 @@
     "test:integration": "TEST_TYPE=integration ./test/test_integration.sh",
     "test:tokenomics": "TEST_TYPE=tokenomics ./test/test_integration.sh",
     "test:all": "pnpm run test && pnpm run test:integration && pnpm run test:tokenomics && pnpm run test:genesis",
-    "deploy:hardhat": "./scripts/download_solc.sh && LOG_LEVEL=debug pnpm hardhat deploy_L1 --network hardhat --dao-vault 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --team-vault 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --l2-genesis-block-hash 0xee1950562d42f0da28bd4550d88886bc90894c77c9c9eaefef775d4c8223f259 --bridge-funder-private-key ddbf12f72c946bb1e6de5eaf580c51db51828ba198d9b0dba9c7d48ec748dc04 --bridge-fund 0xff --oracle-prover 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --confirmations 1",
+    "deploy:hardhat": "./scripts/download_solc.sh && LOG_LEVEL=debug pnpm hardhat deploy_L1 --network hardhat --dao-vault 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --team-vault 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --l2-genesis-block-hash 0xee1950562d42f0da28bd4550d88886bc90894c77c9c9eaefef775d4c8223f259 --bridge-funder-private-key ddbf12f72c946bb1e6de5eaf580c51db51828ba198d9b0dba9c7d48ec748dc04 --bridge-fund 0xff --oracle-prover 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --solo-proposer 0xdf08f82de32b8d460adbe8d72043e3a7e25a3b39 --confirmations 1",
     "lint-staged": "lint-staged --allow-empty",
     "sizer": "pnpm hardhat size-contracts"
   },
diff --git a/packages/protocol/tasks/deploy_L1.ts b/packages/protocol/tasks/deploy_L1.ts
index e44d531eabf..82f97a2ca1c 100644
--- a/packages/protocol/tasks/deploy_L1.ts
+++ b/packages/protocol/tasks/deploy_L1.ts
@@ -37,6 +37,12 @@ task("deploy_L1")
         "",
         types.string
     )
+    .addOptionalParam(
+        "soloProposer",
+        "Address of the solo proposer",
+        "",
+        types.string
+    )
     .addOptionalParam(
         "confirmations",
         "Number of confirmations to wait for deploy transaction.",
@@ -72,6 +78,7 @@ export async function deployContracts(hre: any) {
     const bridgeFunderPrivateKey = hre.args.bridgeFunderPrivateKey;
     const bridgeFund = hre.args.bridgeFund;
     const oracleProver = hre.args.oracleProver;
+    const soloProposer = hre.args.soloProposer;
 
     log.debug(`network: ${network}`);
     log.debug(`chainId: ${chainId}`);
@@ -83,6 +90,7 @@ export async function deployContracts(hre: any) {
     log.debug(`bridgeFunderPrivateKey: ${bridgeFunderPrivateKey}`);
     log.debug(`bridgeFund: ${bridgeFund}`);
     log.debug(`oracleProver: ${oracleProver}`);
+    log.debug(`soloProposer: ${soloProposer}`);
     log.debug(`confirmations: ${hre.args.confirmations}`);
     log.debug();
 
@@ -239,8 +247,8 @@ export async function deployContracts(hre: any) {
                 `${chainId}.${Buffer.from(
                     ethers.utils.arrayify(
                         ethers.utils.solidityPack(
-                            ["string", "uint256", "string", "uint16"],
-                            ["plonk_verifier_", 0, "_", i]
+                            ["string", "uint16"],
+                            ["plonk_verifier_", i]
                         )
                     )
                 ).toString()}`,
@@ -259,6 +267,16 @@ export async function deployContracts(hre: any) {
         );
     }
 
+    if (ethers.utils.isAddress(soloProposer)) {
+        await utils.waitTx(
+            hre,
+            await AddressManager.setAddress(
+                `${chainId}.solo_proposer`,
+                soloProposer
+            )
+        );
+    }
+
     // save deployments
     const deployments = {
         network,