From 7459a81d5e4d0b411a491d698f53fd70251ac3cb Mon Sep 17 00:00:00 2001
From: Miguel de Elias <miguel@edgeandnode.com>
Date: Tue, 29 Sep 2026 17:06:18 -0300
Subject: [PATCH 1/2] chore(deployment): record SubgraphService and L2GNS
 mainnet upgrade

---
 packages/horizon/addresses.json          | 10 +++++++++-
 packages/subgraph-service/addresses.json | 12 ++++++------
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/packages/horizon/addresses.json b/packages/horizon/addresses.json
index e0a7ca012..9cd38dfe0 100644
--- a/packages/horizon/addresses.json
+++ b/packages/horizon/addresses.json
@@ -45,7 +45,15 @@
     "L2GNS": {
       "address": "0xec9A7fb6CbC2E41926127929c2dcE6e9c5D33Bec",
       "proxy": "graph",
-      "implementation": "0x9B81c7C5A21E65b849FD487540B0A82d3b97b2c7"
+      "implementation": "0xa3946606960eee45c9b855de8d3cd30b9c875c34",
+      "implementationDeployment": {
+        "txHash": "0x46c17c9f72e9703bd5366396bc87f7b691442f234d7e461b63cff2b31bc37e95",
+        "argsData": "0x",
+        "bytecodeHash": "0xc8017e4d2d88f34c878efceae26bada5c21aea34d350dba59530e6c5c69ae9ce",
+        "blockNumber": 506560967,
+        "timestamp": "2026-09-18T21:12:37.000Z",
+        "verified": "https://arbiscan.io/address/0xa3946606960eee45c9b855de8d3cd30b9c875c34#code"
+      }
     },
     "SubgraphNFT": {
       "address": "0x3FbD54f0cc17b7aE649008dEEA12ed7D2622B23f"
diff --git a/packages/subgraph-service/addresses.json b/packages/subgraph-service/addresses.json
index 2c76b0246..84e0277ed 100644
--- a/packages/subgraph-service/addresses.json
+++ b/packages/subgraph-service/addresses.json
@@ -4,17 +4,17 @@
       "address": "0xb2Bb92d0DE618878E438b55D5846cfecD9301105",
       "proxy": "transparent",
       "proxyAdmin": "0x49021Ada0806cabce24b73002EB4477fe4934215",
-      "implementation": "0x03a2d29d5cac0373a73f29c8d03b08e634a86939",
+      "implementation": "0x09a72545d2040dc6ac3686631daff113e492f8ea",
       "proxyDeployment": {
         "verified": "https://arbiscan.io/address/0xb2Bb92d0DE618878E438b55D5846cfecD9301105#code"
       },
       "implementationDeployment": {
-        "txHash": "0x7ba886b1165987d011c381f483986612022781131414e9e6bd0bcb2dfbe838e4",
+        "txHash": "0xbbe871a800c4238469304d6e525af6a5cc64093759df916e9b274e1f8a5ea733",
         "argsData": "0x0000000000000000000000000a8491544221dd212964fbb96487467291b2c97e0000000000000000000000002fe023a575449acb698648ed21276293fa176f960000000000000000000000008f69f5c07477ac46fbc491b1e6d91e2bb0111a9e00000000000000000000000022d78fb4bc72e191c765807f8891b5e1785c8014000000000000000000000000ff0dc7310fbfbcc2524dae230cd4f34727eb84ee",
-        "bytecodeHash": "0x7a050c83c8b277775e875806c50b5d557902a9f3f8ab62d17e362ac57e954a84",
-        "blockNumber": 486895347,
-        "timestamp": "2026-07-23T13:58:52.000Z",
-        "verified": "https://arbiscan.io/address/0x03a2d29d5cac0373a73f29c8d03b08e634a86939#code"
+        "bytecodeHash": "0xb0e28c738906c6f45ff8caf7c8b52073bd37a907f84f68a5b4f1e650bcac232d",
+        "blockNumber": 506560354,
+        "timestamp": "2026-09-18T21:10:02.000Z",
+        "verified": "https://arbiscan.io/address/0x09a72545d2040dc6ac3686631daff113e492f8ea#code"
       }
     },
     "DisputeManager": {

From 3488faa549bff2667f145875249d5cc2a9a7523f Mon Sep 17 00:00:00 2001
From: Miguel de Elias <miguel@edgeandnode.com>
Date: Thu, 1 Oct 2026 16:04:14 -0300
Subject: [PATCH 2/2] chore(address-book): release 1.4.0 for the mainnet
 upgrade

Consumers read mainnet addresses from @graphprotocol/address-book, whose src/*
entries are symlinks copied into the tarball at prepublishOnly, so the upgraded
implementations only reach them once a new version ships.

Generated with 'changeset version' from a minor changeset, matching how 1.3.0
was released for the GIP-0088 mainnet activation.
---
 packages/address-book/CHANGELOG.md | 6 ++++++
 packages/address-book/package.json | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/address-book/CHANGELOG.md b/packages/address-book/CHANGELOG.md
index 515ee43b8..c078b2de7 100644
--- a/packages/address-book/CHANGELOG.md
+++ b/packages/address-book/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @graphprotocol/address-book
 
+## 1.4.0
+
+### Minor Changes
+
+- Mainnet upgrade on Arbitrum One: promote the fixed SubgraphService implementation (0x09a72545d2040dc6ac3686631daff113e492f8ea, rejects the SubgraphService itself as a payments destination) and the fixed L2GNS implementation (0xa3946606960eee45c9b855de8d3cd30b9c875c34, adds slippage protection to publishNewVersion).
+
 ## 1.3.0
 
 ### Minor Changes
diff --git a/packages/address-book/package.json b/packages/address-book/package.json
index ebad1f828..a7dc7aa8f 100644
--- a/packages/address-book/package.json
+++ b/packages/address-book/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@graphprotocol/address-book",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "publishConfig": {
     "access": "public"
   },