diff --git a/scripts/contractVerifier.ts b/scripts/contractVerifier.ts
index 64fe68c3..72650231 100644
--- a/scripts/contractVerifier.ts
+++ b/scripts/contractVerifier.ts
@@ -71,6 +71,7 @@ export class ContractVerifier {
     UpdateL1CoreTimelockAction: "src/gov-action-contracts/AIPs/AIP7/UpdateL1CoreTimelockAction.sol:UpdateL1CoreTimelockAction",
     ArbitrumFoundationVestingWalletProxy: this.TUP,
     ArbitrumFoundationVestingWalletLogic: "src/ArbitrumFoundationVestingWallet.sol:ArbitrumFoundationVestingWallet",
+    AddNovaKeysetAction: "src/gov-action-contracts/nonemergency/AddNovaKeysetAction.sol:AddNovaKeysetAction",
   };
 
   constructor(chainId: number, apiKey: string, deployedContracts: DeployProgressCache) {
diff --git a/scripts/proposals/add-dac-keyset/data/42161-dac-update-data.json b/scripts/proposals/add-dac-keyset/data/42161-dac-update-data.json
new file mode 100644
index 00000000..e24a3448
--- /dev/null
+++ b/scripts/proposals/add-dac-keyset/data/42161-dac-update-data.json
@@ -0,0 +1,13 @@
+{
+  "actionChainIds": [
+    1
+  ],
+  "actionAddresses": [
+    "0xDef5CfE3246882BC7f65F9346a8b974BA27D3F4E"
+  ],
+  "description": "SC non emergency action",
+  "arbSysSendTxToL1Args": {
+    "l1Timelock": "0xE6841D92B0C345144506576eC13ECf5103aC7f49",
+    "calldata": "0x8f2a0bb000000000000000000000000000000000000000000000000000000000000000c00000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003f48000000000000000000000000000000000000000000000000000000000000000010000000000000000000000003fffbadaf827559da092217e474760e2b2c3cedd000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000841cff79cd000000000000000000000000def5cfe3246882bc7f65f9346a8b974ba27d3f4e00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000004b147f40c0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+  }
+}
\ No newline at end of file
diff --git a/scripts/proposals/add-dac-keyset/deployAction.ts b/scripts/proposals/add-dac-keyset/deployAction.ts
new file mode 100644
index 00000000..1d665bf8
--- /dev/null
+++ b/scripts/proposals/add-dac-keyset/deployAction.ts
@@ -0,0 +1,43 @@
+import { importDeployedContracts } from "../../../src-ts/utils";
+import { Wallet } from "@ethersproject/wallet";
+import { JsonRpcProvider } from "@ethersproject/providers";
+import {
+    AddNovaKeysetAction__factory
+} from "../../../typechain-types";
+
+import { ContractVerifier } from "../../contractVerifier";
+import dotenv from "dotenv";
+dotenv.config();
+
+const ETH_URL = process.env.ETH_URL;
+const ETH_KEY = process.env.ETH_KEY;
+const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;
+
+if (!ETH_URL) throw new Error("ETH_URL required");
+if (!ETH_KEY) throw new Error("ETH_KEY required");
+if (!ETHERSCAN_API_KEY) throw new Error("ETHERSCAN_API_KEY required");
+
+const main = async () => {
+    const l1Provider = new JsonRpcProvider(ETH_URL);
+    const l1Deployer = new Wallet(ETH_KEY, l1Provider);
+
+    const { chainId: l1ChainId } = await l1Provider.getNetwork();
+
+    const l1Verifier = new ContractVerifier(l1ChainId, ETHERSCAN_API_KEY, {});
+
+    // layer 1 side
+    // the keyset added in that action can be verified using the instructions in
+    // https://forum.arbitrum.foundation/t/non-emergency-security-council-action-update-arbitrum-nova-dac-keyset/19379
+    const action = await new AddNovaKeysetAction__factory(l1Deployer).deploy();
+    await action.deployed();
+    console.log("AddNovaKeysetAction deployed at", action.address);
+
+    await l1Verifier.verifyWithAddress(
+        "AddNovaKeysetAction",
+        action.address,
+    );
+};
+
+main().then(() => {
+    console.log("Done");
+});
diff --git a/scripts/proposals/add-dac-keyset/generateProposalData.ts b/scripts/proposals/add-dac-keyset/generateProposalData.ts
new file mode 100644
index 00000000..f6815bcc
--- /dev/null
+++ b/scripts/proposals/add-dac-keyset/generateProposalData.ts
@@ -0,0 +1,52 @@
+import { JsonRpcProvider } from "@ethersproject/providers";
+import { promises as fs } from "fs";
+import { assertDefined } from "../../security-council-mgmt-deployment/utils"; // todo: move this somewhere else
+import { SecurityCouncilManagementDeploymentResult } from "../../security-council-mgmt-deployment/types";
+import { buildProposal } from "../buildProposal";
+import dotenv from "dotenv";
+dotenv.config();
+
+const description = `SC non emergency action`;
+
+async function main() {
+  const provider = new JsonRpcProvider(assertDefined(process.env.ARB_URL, "ARB_URL is undefined"));
+
+  const chainId = (await provider.getNetwork()).chainId;
+
+  let scmDeploymentPath: string;
+  if (chainId === 42161) {
+    scmDeploymentPath = "files/mainnet/scmDeployment.json";
+  } else {
+    throw new Error(`Unknown chainId ${chainId}`);
+  }
+
+  const scmDeployment = JSON.parse(
+    (await fs.readFile(scmDeploymentPath)).toString()
+  ) as SecurityCouncilManagementDeploymentResult;
+
+  // the keyset added in that action can be verified using the instructions in
+  // https://forum.arbitrum.foundation/t/non-emergency-security-council-action-update-arbitrum-nova-dac-keyset/19379
+  const addNovaKeysetAction = "0xDef5CfE3246882BC7f65F9346a8b974BA27D3F4E"
+
+  const chainIds = [1];
+  const actionAddresses = [addNovaKeysetAction];
+
+  const proposal = await buildProposal(
+    description,
+    provider,
+    scmDeployment.upgradeExecRouteBuilder,
+    chainIds,
+    actionAddresses
+  );
+
+  const path = `${__dirname}/data/${chainId}-dac-update-data.json`;
+  await fs.mkdir(`${__dirname}/data`, { recursive: true });
+  await fs.writeFile(path, JSON.stringify(proposal, null, 2));
+  console.log("Wrote proposal data to", path);
+  console.log(proposal);
+}
+
+main().catch((e) => {
+  console.error(e);
+  process.exit(1);
+});
diff --git a/src/gov-action-contracts/nonemergency/AddNovaKeysetAction.sol b/src/gov-action-contracts/nonemergency/AddNovaKeysetAction.sol
new file mode 100644
index 00000000..37deb93c
--- /dev/null
+++ b/src/gov-action-contracts/nonemergency/AddNovaKeysetAction.sol
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity 0.8.16;
+
+import "@arbitrum/nitro-contracts/src/bridge/ISequencerInbox.sol";
+
+/// @notice Upgrade keyset accepted by the Arbitrum Nova Sequencer Inbox
+contract AddNovaKeysetAction {
+    ISequencerInbox public constant novaInbox =
+        ISequencerInbox(address(0x211E1c4c7f1bF5351Ac850Ed10FD68CFfCF6c21b));
+
+    // new keyset info generated offchain
+    // this removes the Reddit key and secondary OCL key
+    bytes32 public constant keysetHash =
+        0x01191accc7ad5a8020e6c6d122984540e9fc48d0457bda63e0a32c8c31994f4a;
+    bytes public constant keysetBytes =
+        hex"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";
+
+    function perform() public {
+        // adds new keyset as valid submitter
+        novaInbox.setValidKeyset(keysetBytes);
+
+        // verify keyset was set correctly
+        require(novaInbox.isValidKeysetHash(keysetHash), "valid keyset not set");
+
+        // this action does not remove the old keyset to allow for a seemless transition on the batch poster
+        // once the offchain batch poster is updated, the old keyset should be removed so the one added in this action is the sole valid one
+    }
+}