diff --git a/.changeset/fast-mangos-smoke.md b/.changeset/fast-mangos-smoke.md
new file mode 100644
index 000000000000..3d930d04893a
--- /dev/null
+++ b/.changeset/fast-mangos-smoke.md
@@ -0,0 +1,5 @@
+---
+'@eth-optimism/hardhat-deploy-config': patch
+---
+
+Support JSON-formatted deploy configs
diff --git a/packages/contracts-bedrock/hardhat.config.ts b/packages/contracts-bedrock/hardhat.config.ts
index e07578243e41..106bc67294c3 100644
--- a/packages/contracts-bedrock/hardhat.config.ts
+++ b/packages/contracts-bedrock/hardhat.config.ts
@@ -46,6 +46,11 @@ const config: HardhatUserConfig = {
       url: process.env.L1_RPC || '',
       accounts: [process.env.PRIVATE_KEY_DEPLOYER || ethers.constants.HashZero],
     },
+    deployer: {
+      chainId: Number(process.env.CHAIN_ID),
+      url: process.env.L1_RPC || '',
+      accounts: [process.env.PRIVATE_KEY_DEPLOYER || ethers.constants.HashZero],
+    },
   },
   foundry: {
     buildInfo: true,
diff --git a/packages/hardhat-deploy-config/src/plugin.ts b/packages/hardhat-deploy-config/src/plugin.ts
index 725c379671a1..42f405e1d6eb 100644
--- a/packages/hardhat-deploy-config/src/plugin.ts
+++ b/packages/hardhat-deploy-config/src/plugin.ts
@@ -1,4 +1,5 @@
 import * as path from 'path'
+import * as fs from 'fs'
 
 import { extendEnvironment, extendConfig } from 'hardhat/config'
 import {
@@ -28,9 +29,16 @@ const normalizePath = (
 export const loadDeployConfig = (hre: HardhatRuntimeEnvironment): any => {
   let config: any
   try {
-    config =
+    const base = `${hre.config.paths.deployConfig}/${hre.network.name}`
+    if (fs.existsSync(`${base}.ts`)) {
       // eslint-disable-next-line @typescript-eslint/no-var-requires
-      require(`${hre.config.paths.deployConfig}/${hre.network.name}.ts`).default
+      config = require(`${base}.ts`).default
+    } else if (fs.existsSync(`${base}.json`)) {
+      // eslint-disable-next-line @typescript-eslint/no-var-requires
+      config = require(`${base}.json`)
+    } else {
+      throw new Error('not found')
+    }
   } catch (err) {
     throw new Error(
       `error while loading deploy config for network: ${hre.network.name}, ${err}`