diff --git a/packages/lib-ethers/deployments/default/mainnet.json b/packages/lib-ethers/deployments/default/mainnet.json
new file mode 100644
index 000000000..ac4844800
--- /dev/null
+++ b/packages/lib-ethers/deployments/default/mainnet.json
@@ -0,0 +1,30 @@
+{
+  "chainId": 1,
+  "version": "5174ecd0da4842157aba989499200d690b7e374f",
+  "deploymentDate": 1617611590000,
+  "bootstrapPeriod": 1209600,
+  "totalStabilityPoolLQTYReward": "32000000",
+  "_priceFeedIsTestnet": false,
+  "_uniTokenIsMock": false,
+  "_isDev": false,
+  "addresses": {
+    "activePool": "0xDf9Eb223bAFBE5c5271415C75aeCD68C21fE3D7F",
+    "borrowerOperations": "0x24179CD81c9e782A4096035f7eC97fB8B783e007",
+    "troveManager": "0xA39739EF8b0231DbFA0DcdA07d7e29faAbCf4bb2",
+    "collSurplusPool": "0x3D32e8b97Ed5881324241Cf03b2DA5E2EBcE5521",
+    "communityIssuance": "0xD8c9D9071123a059C6E0A945cF0e0c82b508d816",
+    "defaultPool": "0x896a3F03176f05CFbb4f006BfCd8723F2B0D741C",
+    "hintHelpers": "0xE84251b93D9524E0d2e621Ba7dc7cb3579F997C0",
+    "lockupContractFactory": "0x2eBeF24dA09489218Ba2BECb01867F6DaAeDcD4B",
+    "lqtyStaking": "0x4f9Fbb3f1E99B56e0Fe2892e623Ed36A76Fc605d",
+    "priceFeed": "0x4c517D4e2C851CA76d7eC94B805269Df0f2201De",
+    "sortedTroves": "0x8FdD3fbFEb32b28fb73555518f8b361bCeA741A6",
+    "stabilityPool": "0x66017D22b0f8556afDd19FC67041899Eb65a21bb",
+    "gasPool": "0x9555b042F969E561855e5F28cB1230819149A8d9",
+    "unipool": "0xd37a77E71ddF3373a79BE2eBB76B6c4808bDF0d5",
+    "lusdToken": "0x5f98805A4E8be255a32880FDeC7F6728C6568bA0",
+    "lqtyToken": "0x6DEA81C8171D0bA574754EF6F8b412F2Ed88c54D",
+    "multiTroveGetter": "0xFc92d0E9Fa35df17E3A6d9F40716ca2cE749922B",
+    "uniToken": "0xF20EF17b889b437C151eB5bA15A47bFc62bfF469"
+  }
+}
diff --git a/packages/lib-ethers/src/EthersLiquityConnection.ts b/packages/lib-ethers/src/EthersLiquityConnection.ts
index 4cc684e86..b9bef9add 100644
--- a/packages/lib-ethers/src/EthersLiquityConnection.ts
+++ b/packages/lib-ethers/src/EthersLiquityConnection.ts
@@ -9,6 +9,7 @@ import goerli from "../deployments/goerli.json";
 import kovan from "../deployments/kovan.json";
 import rinkeby from "../deployments/rinkeby.json";
 import ropsten from "../deployments/ropsten.json";
+import mainnet from "../deployments/mainnet.json";
 
 import { EthersProvider, EthersSigner } from "./types";
 
@@ -26,6 +27,7 @@ const dev = devOrNull as _LiquityDeploymentJSON | null;
 const deployments: {
   [chainId: number]: _LiquityDeploymentJSON | undefined;
 } = {
+  [mainnet.chainId]: mainnet,
   [ropsten.chainId]: ropsten,
   [rinkeby.chainId]: rinkeby,
   [goerli.chainId]: goerli,