diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 99786e93..b279abc6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -144,10 +144,16 @@ jobs:
       - name: Test mappings
         run: npm test
 
-      - name: Render canonical deployment manifest
+      - name: Render canonical Testnet deployment manifest
         run: npm run render:deployment
 
-      - name: Build canonical deployment subgraph
+      - name: Build canonical Testnet deployment subgraph
+        run: npm run build
+
+      - name: Render canonical Mainnet deployment manifest
+        run: npm run render:mainnet
+
+      - name: Build canonical Mainnet deployment subgraph
         run: npm run build
 
   publish-docker:
diff --git a/contracts/deployments/dos-mainnet-7979.json b/contracts/deployments/dos-mainnet-7979.json
new file mode 100644
index 00000000..be0db51b
--- /dev/null
+++ b/contracts/deployments/dos-mainnet-7979.json
@@ -0,0 +1,35 @@
+{
+  "environment": "dos-mainnet",
+  "chainId": 7979,
+  "deploymentBlock": 117,
+  "finalDeploymentBlock": 162,
+  "deployedAt": "2026-08-12T19:44:44Z",
+  "deployer": "0x99999e454138f6be73E2bE82c890bc5765749999",
+  "owner": "0x310Bc061214ee89aF5CfB28a6ebF96c5436fa3CD",
+  "beneficiary": "0x310Bc061214ee89aF5CfB28a6ebF96c5436fa3CD",
+  "smokeName": "bens-smoke.dos",
+  "smokeResolvedAddress": "0x99999e454138f6be73E2bE82c890bc5765749999",
+  "transactions": {
+    "first": "0xb2fc1d57f72439403e095a8ec1d319342069cf400d77c89b5a043d43eb301ffc",
+    "last": "0xd1860882db7b632405c6189b4dbad6804f37fc6b957e0558e13d37738170ccbb",
+    "count": 46
+  },
+  "contracts": {
+    "wrappedDOS": "0x1111111111111111111111111111111111111111",
+    "contractNamerImplementation": "0xc647ccf449dec38bb8b7272e60fc14b3548c9547",
+    "contractNamer": "0x069056B2Ae8fD8c071Efb827c5AF73a0996840E1",
+    "verifiableFactory": "0x030eec847cf5D9d1c4A0b4e0459d130D0B35577C",
+    "labelStore": "0xB86bb608E6Afd7a8Eb209510c01BB859A7c315f1",
+    "rootRegistry": "0x38FC582690c3F28099087A88520056afAb08ce5F",
+    "dosRegistry": "0xb17Fec6fe18aC0b7F3dd934495E84eC06Cf88564",
+    "reverseRegistry": "0x8A2730c903d93b2116Fab3d9110C7D585F7B5a91",
+    "priceOracle": "0x4fcD4427859fc657a5Ef3c181202728cc16c85cf",
+    "dosRegistrar": "0x1F31e05948769174dA256D0484b8f26cfD3d8c97",
+    "permissionedResolverImplementation": "0x72aB4bE8B13CF39F68c73bA1B409A1fdFc0448AD",
+    "userRegistryImplementation": "0xfa579733d7C5A21B5D3C4399D3d6Ef89fc3A3720",
+    "gatewayProvider": "0x8291F1C6aEf2acBC58F3fe11C9e4EC0d3D4aE904",
+    "universalResolver": "0xCB20A0C349f079b8bD403ea8F668FE3DA49E981f",
+    "reverseRegistrar": "0x5A34c9fB9806239Ed61f1570c51edb198333fbeA",
+    "smokeResolver": "0xDDeE50c9721807B8B7e8640D9E2bd0AEBB6AA4d4"
+  }
+}
diff --git a/subgraph/dos-names/package.json b/subgraph/dos-names/package.json
index e91ea04d..439ab45e 100644
--- a/subgraph/dos-names/package.json
+++ b/subgraph/dos-names/package.json
@@ -9,6 +9,7 @@
     "render": "node scripts/render-manifest.mjs",
     "render:test": "node scripts/render-manifest.mjs tests/fixtures/dos-testnet-3939.json subgraph.template.yaml subgraph.yaml",
     "render:deployment": "node scripts/render-manifest.mjs ../../contracts/deployments/dos-testnet-3939.json subgraph.template.yaml subgraph.yaml",
+    "render:mainnet": "node scripts/render-manifest.mjs ../../contracts/deployments/dos-mainnet-7979.json subgraph.template.yaml subgraph.yaml",
     "test": "graph test",
     "test:render": "node --test tests/render-manifest.test.mjs"
   },
diff --git a/subgraph/dos-names/scripts/render-manifest.mjs b/subgraph/dos-names/scripts/render-manifest.mjs
index 72c7b6c6..fdc5e05c 100644
--- a/subgraph/dos-names/scripts/render-manifest.mjs
+++ b/subgraph/dos-names/scripts/render-manifest.mjs
@@ -2,7 +2,11 @@ import fs from "node:fs";
 import path from "node:path";
 import { pathToFileURL } from "node:url";
 
-const EXPECTED_CHAIN_ID = 3939;
+const EXPECTED_CHAIN_IDS = new Set([3939, 7979]);
+const NETWORKS = new Map([
+  [3939, "dos-testnet"],
+  [7979, "dos-mainnet"],
+]);
 const ZERO_ADDRESS = "0x0000000000000000000000000000000000000000";
 const ADDRESS_PATTERN = /^0x[0-9a-fA-F]{40}$/;
 
@@ -16,8 +20,8 @@ const CONTRACT_PLACEHOLDERS = [
 ];
 
 export function validateDeployment(deployment) {
-  if (deployment?.chainId !== EXPECTED_CHAIN_ID) {
-    throw new Error(`chainId must be ${EXPECTED_CHAIN_ID}`);
+  if (!EXPECTED_CHAIN_IDS.has(deployment?.chainId)) {
+    throw new Error("chainId must be one of 3939, 7979");
   }
 
   if (
@@ -61,6 +65,13 @@ export function renderManifest(template, deployment) {
   validateDeployment(deployment);
 
   let rendered = template;
+  if (!rendered.includes("__NETWORK__")) {
+    throw new Error("template is missing __NETWORK__");
+  }
+  rendered = rendered.replaceAll(
+    "__NETWORK__",
+    NETWORKS.get(deployment.chainId),
+  );
   for (const [contractName, placeholder] of CONTRACT_PLACEHOLDERS) {
     if (!rendered.includes(placeholder)) {
       throw new Error(`template is missing ${placeholder}`);
diff --git a/subgraph/dos-names/subgraph.template.yaml b/subgraph/dos-names/subgraph.template.yaml
index 5aadae94..c8aa31f1 100644
--- a/subgraph/dos-names/subgraph.template.yaml
+++ b/subgraph/dos-names/subgraph.template.yaml
@@ -7,7 +7,7 @@ dataSources:
   # Emits: NameRegistered, ResolverUpdated, ExpiryUpdated, SubregistryUpdated, ERC1155 transfers
   - kind: ethereum/contract
     name: DOSTLDRegistry
-    network: dos-testnet
+    network: __NETWORK__
     source:
       abi: PermissionedRegistry
       address: "__DOS_REGISTRY_ADDRESS__"
@@ -49,7 +49,7 @@ dataSources:
   # Emits: NameRegistered (with cost info), NameRenewed
   - kind: ethereum/contract
     name: DOSRegistrar
-    network: dos-testnet
+    network: __NETWORK__
     source:
       abi: DOSRegistrar
       address: "__DOS_REGISTRAR_ADDRESS__"
@@ -76,7 +76,7 @@ dataSources:
   # Emits: AddrChanged, AddressChanged, TextChanged, ContenthashChanged, etc.
   - kind: ethereum/contract
     name: Resolver
-    network: dos-testnet
+    network: __NETWORK__
     source:
       abi: PermissionedResolver
       address: "__PERMISSIONED_RESOLVER_IMPLEMENTATION_ADDRESS__"
@@ -116,7 +116,7 @@ dataSources:
 templates:
   - kind: ethereum/contract
     name: UserRegistryTemplate
-    network: dos-testnet
+    network: __NETWORK__
     source:
       abi: PermissionedRegistry
     mapping:
@@ -155,7 +155,7 @@ templates:
 
   - kind: ethereum/contract
     name: ResolverTemplate
-    network: dos-testnet
+    network: __NETWORK__
     source:
       abi: PermissionedResolver
     mapping:
diff --git a/subgraph/dos-names/tests/render-manifest.test.mjs b/subgraph/dos-names/tests/render-manifest.test.mjs
index af4d0332..9e47ac35 100644
--- a/subgraph/dos-names/tests/render-manifest.test.mjs
+++ b/subgraph/dos-names/tests/render-manifest.test.mjs
@@ -18,6 +18,7 @@ const VALID_DEPLOYMENT = {
 };
 
 const TEMPLATE = `
+network: __NETWORK__
 registry: __DOS_REGISTRY_ADDRESS__
 registrar: __DOS_REGISTRAR_ADDRESS__
 resolver: __PERMISSIONED_RESOLVER_IMPLEMENTATION_ADDRESS__
@@ -31,13 +32,24 @@ test("renders every contract address and deployment block", () => {
   assert.match(rendered, /0x2222222222222222222222222222222222222222/);
   assert.match(rendered, /0x3333333333333333333333333333333333333333/);
   assert.match(rendered, /startBlock: 68/);
+  assert.match(rendered, /network: dos-testnet/);
   assert.doesNotMatch(rendered, /__[A-Z0-9_]+__/);
 });
 
-test("rejects a deployment for another chain", () => {
+test("accepts the canonical DOS Mainnet deployment", () => {
+  const deployment = {
+    ...VALID_DEPLOYMENT,
+    chainId: 7979,
+  };
+
+  assert.doesNotThrow(() => validateDeployment(deployment));
+  assert.match(renderManifest(TEMPLATE, deployment), /network: dos-mainnet/);
+});
+
+test("rejects a deployment for an unsupported chain", () => {
   assert.throws(
-    () => validateDeployment({ ...VALID_DEPLOYMENT, chainId: 7979 }),
-    /chainId must be 3939/,
+    () => validateDeployment({ ...VALID_DEPLOYMENT, chainId: 1 }),
+    /chainId must be one of 3939, 7979/,
   );
 });
 
@@ -102,7 +114,11 @@ test("rejects a zero contract address", () => {
 
 test("rejects a template missing a required placeholder", () => {
   assert.throws(
-    () => renderManifest("startBlock: __START_BLOCK__", VALID_DEPLOYMENT),
+    () =>
+      renderManifest(
+        "network: __NETWORK__\nstartBlock: __START_BLOCK__",
+        VALID_DEPLOYMENT,
+      ),
     /template is missing __DOS_REGISTRY_ADDRESS__/,
   );
 });