diff --git a/.changeset/slimy-singers-occur.md b/.changeset/slimy-singers-occur.md
new file mode 100644
index 000000000..c3b20dab8
--- /dev/null
+++ b/.changeset/slimy-singers-occur.md
@@ -0,0 +1,5 @@
+---
+"@rabbitholegg/questdk-plugin-utils": minor
+---
+
+add support for blast
diff --git a/packages/utils/src/constants/layer-zero-relayer-addresses.ts b/packages/utils/src/constants/layer-zero-relayer-addresses.ts
index 9d2e2ef02..f3605cc97 100644
--- a/packages/utils/src/constants/layer-zero-relayer-addresses.ts
+++ b/packages/utils/src/constants/layer-zero-relayer-addresses.ts
@@ -1,6 +1,7 @@
 import { Address } from 'viem'
 import { Chains } from './chain-ids'
 
+// to find relayer address, check a tx on https://layerzeroscan.com/
 export const RELAYER_ADDRESSES: { [chain in Chains]?: Address } = {
   [Chains.ETHEREUM]: '0x902F09715B6303d4173037652FA7377e5b98089E',
   [Chains.OPTIMISM]: '0x81E792e5a9003CC1C8BF5569A00f34b65d75b017',
@@ -12,4 +13,5 @@ export const RELAYER_ADDRESSES: { [chain in Chains]?: Address } = {
   [Chains.ARBITRUM_ONE]: '0x177d36dBE2271A4DdB2Ad8304d82628eb921d790',
   [Chains.AVALANCHE]: '0xCD2E3622d483C7Dc855F72e5eafAdCD577ac78B4',
   [Chains.ZORA]: '0xA658742d33ebd2ce2F0bdFf73515Aa797Fd161D9',
+  [Chains.BLAST]: '0xA658742d33ebd2ce2F0bdFf73515Aa797Fd161D9',
 }
diff --git a/packages/utils/src/helpers/chain-id-to-viem-chain.ts b/packages/utils/src/helpers/chain-id-to-viem-chain.ts
index 1f23cc320..43957ef9e 100644
--- a/packages/utils/src/helpers/chain-id-to-viem-chain.ts
+++ b/packages/utils/src/helpers/chain-id-to-viem-chain.ts
@@ -1,6 +1,7 @@
 import {
   arbitrum,
   base,
+  blast,
   mainnet,
   optimism,
   polygon,
@@ -14,6 +15,8 @@ export const chainIdToViemChain = (chainId: number) => {
       return arbitrum
     case base.id:
       return base
+    case blast.id:
+      return blast
     case mainnet.id:
       return mainnet
     case optimism.id: