diff --git a/contract_manager/store/chains/EvmChains.yaml b/contract_manager/store/chains/EvmChains.yaml
index 7e573d0c..4dca599c 100644
--- a/contract_manager/store/chains/EvmChains.yaml
+++ b/contract_manager/store/chains/EvmChains.yaml
@@ -53,10 +53,10 @@
   rpcUrl: https://testnet.aurora.dev
   networkId: 1313161555
   type: EvmChain
-- id: mantle_testnet
+- id: mantle_sepolia
   mainnet: false
-  rpcUrl: https://rpc.testnet.mantle.xyz/
-  networkId: 5001
+  rpcUrl: https://rpc.sepolia.mantle.xyz
+  networkId: 5003
   type: EvmChain
 - id: gnosis
   mainnet: true
@@ -483,3 +483,13 @@
   rpcUrl: https://falling-small-wildflower.blast-mainnet.quiknode.pro/$ENV_BLAST_MAINNET_API_KEY
   networkId: 81457
   type: EvmChain
+- id: merlin_testnet
+  mainnet: false
+  rpcUrl: https://testnet-rpc.merlinchain.io/
+  networkId: 686868
+  type: EvmChain
+- id: merlin
+  mainnet: true
+  rpcUrl: https://rpc.merlinchain.io
+  networkId: 4200
+  type: EvmChain
diff --git a/contract_manager/store/contracts/EvmPriceFeedContracts.yaml b/contract_manager/store/contracts/EvmPriceFeedContracts.yaml
index 2146a1d4..dc998cdd 100644
--- a/contract_manager/store/contracts/EvmPriceFeedContracts.yaml
+++ b/contract_manager/store/contracts/EvmPriceFeedContracts.yaml
@@ -115,9 +115,6 @@
 - chain: aurora_testnet
   address: "0x74f09cb3c7e2A01865f424FD14F6dc9A14E3e94E"
   type: EvmPriceFeedContract
-- chain: mantle_testnet
-  address: "0xDd24F84d36BF92C65F92307595335bdFab5Bbd21"
-  type: EvmPriceFeedContract
 - chain: chiado
   address: "0x98046Bd286715D3B0BC227Dd7a956b83D8978603"
   type: EvmPriceFeedContract
@@ -289,3 +286,12 @@
 - chain: astar_zkevm
   address: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729"
   type: EvmPriceFeedContract
+- chain: merlin_testnet
+  address: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729"
+  type: EvmPriceFeedContract
+- chain: mantle_sepolia
+  address: "0x98046Bd286715D3B0BC227Dd7a956b83D8978603"
+  type: EvmPriceFeedContract
+- chain: merlin
+  address: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729"
+  type: EvmPriceFeedContract
diff --git a/governance/xc_admin/packages/xc_admin_common/src/chains.ts b/governance/xc_admin/packages/xc_admin_common/src/chains.ts
index e602c35a..36db69bf 100644
--- a/governance/xc_admin/packages/xc_admin_common/src/chains.ts
+++ b/governance/xc_admin/packages/xc_admin_common/src/chains.ts
@@ -63,6 +63,7 @@ export const RECEIVER_CHAINS = {
   lightlink_phoenix: 60044,
   injective_inevm: 60045,
   blast: 60046,
+  merlin: 60047,
 
   // Testnets as a separate chain ids (to use stable data sources and governance for them)
   injective_testnet: 60013,
@@ -80,7 +81,7 @@ export const RECEIVER_CHAINS = {
   canto_testnet: 50006,
   polygon_zkevm_testnet: 50007,
   aurora_testnet: 50008,
-  mantle_testnet: 50009,
+  mantle_sepolia: 50009,
   fantom_testnet: 50010,
   mumbai: 50011, // Polygon testnet
   neon_devnet: 50012,
@@ -128,6 +129,7 @@ export const RECEIVER_CHAINS = {
   injective_inevm_testnet: 50054,
   idex_xchain_testnet: 50055,
   berachain_testnet: 50056,
+  merlin_testnet: 50057,
 };
 
 // If there is any overlapping value the receiver chain will replace the wormhole
diff --git a/package-lock.json b/package-lock.json
index 3e41bba9..10e4401f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -59193,7 +59193,7 @@
     },
     "target_chains/ethereum/sdk/js": {
       "name": "@pythnetwork/pyth-evm-js",
-      "version": "1.34.0",
+      "version": "1.35.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@pythnetwork/price-service-client": "*",
diff --git a/target_chains/ethereum/sdk/js/package.json b/target_chains/ethereum/sdk/js/package.json
index 24d0d86d..16a3099c 100644
--- a/target_chains/ethereum/sdk/js/package.json
+++ b/target_chains/ethereum/sdk/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@pythnetwork/pyth-evm-js",
-  "version": "1.34.0",
+  "version": "1.35.0",
   "description": "Pyth Network EVM Utils in JS",
   "homepage": "https://pyth.network",
   "author": {
diff --git a/target_chains/ethereum/sdk/js/src/index.ts b/target_chains/ethereum/sdk/js/src/index.ts
index 3029eb0f..760643d7 100644
--- a/target_chains/ethereum/sdk/js/src/index.ts
+++ b/target_chains/ethereum/sdk/js/src/index.ts
@@ -40,6 +40,7 @@ export const CONTRACT_ADDR: Record<string, string> = {
   linea: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
   manta: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
   mantle: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
+  merlin: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
   meter: "0xbFe3f445653f2136b2FD1e6DdDb5676392E3AF16",
   mode: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
   neon: "0x7f2dB085eFC3560AFF33865dD727225d91B4f9A5",
@@ -86,7 +87,8 @@ export const CONTRACT_ADDR: Record<string, string> = {
   lightlink_pegasus_testnet: "0x5D289Ad1CE59fCC25b6892e7A303dfFf3a9f7167",
   linea_goerli: "0xdF21D137Aadc95588205586636710ca2890538d5",
   manta_testnet: "0x41c9e39574F40Ad34c79f1C99B66A45eFB830d4c",
-  mantle_testnet: "0xDd24F84d36BF92C65F92307595335bdFab5Bbd21",
+  mantle_sepolia: "0x98046Bd286715D3B0BC227Dd7a956b83D8978603",
+  merlin_testnet: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
   meter_testnet: "0x5a71C07a0588074443545eE0c08fb0375564c3E4",
   mode_testnet: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",
   movement_evm_devnet: "0xA2aa501b19aff244D90cc15a4Cf739D2725B5729",