diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6dc62b6..1a3ea43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## vNext
+## v1.1.0 - Support deal sponsor
 - Add `sponsor` to `deal`. (#31)
 - Update deployment hosts:
     - production (#30)
@@ -9,7 +9,7 @@
 - Add integration test suite. (#21)
 - Add unit test suite. (#20)
 
-## 1.0.0 - initial release
+## v1.0.0 - initial release
 
 ### features
 
diff --git a/Jenkinsfile_Subgraph_bellecour b/Jenkinsfile_Subgraph_bellecour
index 5dbf228..3250668 100644
--- a/Jenkinsfile_Subgraph_bellecour
+++ b/Jenkinsfile_Subgraph_bellecour
@@ -6,6 +6,6 @@ deploySubGraph(
   targetRemoteHostIPFS : 'ipfs-upload.v8-bellecour.iex.ec',
   subgraphFolder: './',
   subgraphFilename: 'subgraph.bellecour.yaml',
-  subgraphVersionLabel: 'v1.0.0-rc.1',
+  subgraphVersionLabel: 'v1.1.0',
   subgraphLabel: 'bellecour/poco-v5'
 )
diff --git a/Jenkinsfile_Subgraph_bellecour_stagingv8 b/Jenkinsfile_Subgraph_bellecour_stagingv8
index eed830b..8208816 100644
--- a/Jenkinsfile_Subgraph_bellecour_stagingv8
+++ b/Jenkinsfile_Subgraph_bellecour_stagingv8
@@ -6,6 +6,6 @@ deploySubGraph(
   targetRemoteHostIPFS : 'ipfs-upload.stagingv8.iex.ec',
   subgraphFolder: './',
   subgraphFilename: 'subgraph.bellecour.yaml',
-  subgraphVersionLabel: 'v1.0.0-rc.1',
+  subgraphVersionLabel: 'v1.1.0',
   subgraphLabel: 'bellecour/poco-v5'
 )
diff --git a/package-lock.json b/package-lock.json
index 9e28aa3..04092ba 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@iexec/subgraph",
-  "version": "1.0.0-rc.1",
+  "version": "1.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@iexec/subgraph",
-      "version": "1.0.0-rc.1",
+      "version": "1.1.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@iexec/poco": "^5.5.0",
diff --git a/package.json b/package.json
index dc1ab53..1aade5e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@iexec/subgraph",
-  "version": "1.0.0-rc.1",
+  "version": "1.1.0",
   "author": "iExec",
   "license": "Apache-2.0",
   "scripts": {
@@ -14,7 +14,6 @@
     "deploy": "graph deploy ${NETWORK_NAME:-bellecour}/poco --node ${GRAPHNODE_URL:-http://localhost:8020} --ipfs ${IPFS_URL:-http://localhost:5001} --version-label ${VERSION_LABEL:-bellecour/poco-v5}",
     "deploy:all": "npm run build && npm run create && npm run deploy",
     "itest": "DEBUG=testcontainers:* mocha"
-   
   },
   "lint-staged": {
     "*.{js,ts}": [
diff --git a/src/Modules/IexecPoco.ts b/src/Modules/IexecPoco.ts
index e15eeb0..6fd4216 100644
--- a/src/Modules/IexecPoco.ts
+++ b/src/Modules/IexecPoco.ts
@@ -1,7 +1,8 @@
 // SPDX-FileCopyrightText: 2020-2024 IEXEC BLOCKCHAIN TECH <contact@iex.ec>
 // SPDX-License-Identifier: Apache-2.0
 
-import { BigInt } from '@graphprotocol/graph-ts';
+import { Address, BigInt, dataSource } from '@graphprotocol/graph-ts';
+const chainName = dataSource.network();
 
 import {
     AccurateContribution as AccurateContributionEvent,
@@ -127,10 +128,17 @@ export function handleMatchOrders(call: MatchOrdersCall): void {
 export function handleOrdersMatched(event: OrdersMatchedEvent): void {
     let contract = IexecInterfaceTokenContract.bind(event.address);
     let viewedDeal = contract.viewDeal(event.params.dealid);
-
+    // The `sponsor` has been introduced on Bellecour for the PoCo v5.5.0 release:
+    // https://blockscout.bellecour.iex.ec/tx/0x71b904f526a9be218d35748f57d74ef6da20d12c88f94cfa1ec5ae2de187cb98
+    // TODO: Use grafting instead, see https://thegraph.com/docs/en/subgraphs/cookbook/grafting/
+    const sponsor =
+        chainName == 'bellecour' && event.block.number < BigInt.fromI32(30277938)
+            ? Address.zero().toHexString()
+            : viewedDeal.sponsor.toHex();
     fetchAccount(viewedDeal.requester.toHex()).save();
     fetchAccount(viewedDeal.beneficiary.toHex()).save();
     fetchAccount(viewedDeal.callback.toHex()).save();
+    fetchAccount(sponsor).save();
 
     let deal = fetchDeal(event.params.dealid.toHex());
     deal.app = viewedDeal.app.pointer.toHex();
@@ -154,7 +162,7 @@ export function handleOrdersMatched(event: OrdersMatchedEvent): void {
     deal.botSize = viewedDeal.botSize;
     deal.workerStake = viewedDeal.workerStake;
     deal.schedulerRewardRatio = viewedDeal.schedulerRewardRatio;
-    deal.sponsor = viewedDeal.sponsor.toHex();
+    deal.sponsor = sponsor;
     deal.apporder = event.params.appHash.toHex();
     deal.datasetorder = event.params.datasetHash.toHex();
     deal.workerpoolorder = event.params.workerpoolHash.toHex();