diff --git a/rust/config/testnet4_config.json b/rust/config/testnet4_config.json
index d9cdb4d9f4..0b8f2db24c 100644
--- a/rust/config/testnet4_config.json
+++ b/rust/config/testnet4_config.json
@@ -46,7 +46,7 @@
       "validatorAnnounce": "0x3726EE36a2A9e11a40d1ffD7D9A1A16e0154cDA0",
       "merkleTreeHook": "0x221FA9CBaFcd6c1C3d206571Cf4427703e023FFa",
       "storageGasOracle": "0x8356113754C7aCa297Db3089b89F87CC125499fb",
-      "interchainGasPaymaster": "0x1246529edDcA523AfE5c6b9414299633d2E16697",
+      "interchainGasPaymaster": "0x44769b0f4a6f01339e131a691cc2eebbb519d297",
       "aggregationHook": "0xdBabD76358897E68E4964647C1fb8Bf524f5EFdB",
       "protocolFee": "0xC9D50584F08Bf6cCD1004d14c7062044b45E3b48",
       "defaultIsm": "0xFBb1D475d2275D4643B6ba9Dae16f2F5465F9436",
diff --git a/rust/config/testnet_config.json b/rust/config/testnet_config.json
deleted file mode 100644
index baf249942c..0000000000
--- a/rust/config/testnet_config.json
+++ /dev/null
@@ -1,163 +0,0 @@
-{
-  "chains": {
-    "alfajores": {
-      "name": "alfajores",
-      "domain": 44787,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 0,
-      "index": {
-        "from": 14863532
-      }
-    },
-    "fuji": {
-      "name": "fuji",
-      "domain": 43113,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 3,
-      "index": {
-        "from": 16330615
-      }
-    },
-    "mumbai": {
-      "name": "mumbai",
-      "domain": 80001,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 32,
-      "index": {
-        "from": 29390033
-      }
-    },
-    "bsctestnet": {
-      "name": "bsctestnet",
-      "domain": 97,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 9,
-      "index": {
-        "from": 25001629
-      }
-    },
-    "goerli": {
-      "name": "goerli",
-      "domain": 5,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 2,
-      "index": {
-        "from": 8039005
-      }
-    },
-    "sepolia": {
-      "name": "sepolia",
-      "domain": 11155111,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 2,
-      "index": {
-        "from": 3082913
-      }
-    },
-    "moonbasealpha": {
-      "name": "moonbasealpha",
-      "domain": 1287,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 1,
-      "index": {
-        "from": 3310405
-      }
-    },
-    "optimismgoerli": {
-      "name": "optimismgoerli",
-      "domain": 420,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 1,
-      "index": {
-        "from": 3055263
-      }
-    },
-    "arbitrumgoerli": {
-      "name": "arbitrumgoerli",
-      "domain": 421613,
-      "addresses": {
-        "mailbox": "0xCC737a94FecaeC165AbCf12dED095BB13F037685",
-        "interchainGasPaymaster": "0x8f9C3888bFC8a5B25AED115A82eCbb788b196d2a",
-        "validatorAnnounce": "0x3Fc742696D5dc9846e04f7A1823D92cb51695f9a"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 1,
-      "index": {
-        "from": 1941997
-      }
-    },
-    "solanadevnet": {
-      "name": "solanadevnet",
-      "domain": 1399811151,
-      "addresses": {
-        "mailbox": "4v25Dz9RccqUrTzmfHzJMsjd1iVoNrWzeJ4o6GYuJrVn",
-        "interchainGasPaymaster": "7hMPEGdgBQFsjEz3aaNwZp8WMFHs615zAM3erXBDJuJR",
-        "validatorAnnounce": "CMHKvdq4CopDf7qXnDCaTybS15QekQeRt4oUB219yxsp"
-      },
-      "protocol": "sealevel",
-      "finalityBlocks": 0,
-      "connection": {
-        "type": "http",
-        "url": "https://api.devnet.solana.com"
-      },
-      "index": {
-        "from": 1,
-        "mode": "sequence"
-      }
-    },
-    "proteustestnet": {
-      "name": "proteustestnet",
-      "domain": 88002,
-      "addresses": {
-        "mailbox": "0x918D3924Fad8F71551D9081172e9Bb169745461e",
-        "interchainGasPaymaster": "0x06b62A9F5AEcc1E601D0E02732b4E1D0705DE7Db",
-        "validatorAnnounce": "0xEEea93d0d0287c71e47B3f62AFB0a92b9E8429a1"
-      },
-      "protocol": "ethereum",
-      "finalityBlocks": 1,
-      "index": {
-        "from": 8609588
-      }
-    }
-  }
-}
diff --git a/typescript/sdk/src/consts/environments/testnet.json b/typescript/sdk/src/consts/environments/testnet.json
index d406b77cfe..2126cc1d05 100644
--- a/typescript/sdk/src/consts/environments/testnet.json
+++ b/typescript/sdk/src/consts/environments/testnet.json
@@ -74,7 +74,7 @@
     "validatorAnnounce": "0x3726EE36a2A9e11a40d1ffD7D9A1A16e0154cDA0",
     "merkleTreeHook": "0x221FA9CBaFcd6c1C3d206571Cf4427703e023FFa",
     "storageGasOracle": "0x8356113754C7aCa297Db3089b89F87CC125499fb",
-    "interchainGasPaymaster": "0x1246529edDcA523AfE5c6b9414299633d2E16697",
+    "interchainGasPaymaster": "0x44769b0f4a6f01339e131a691cc2eebbb519d297",
     "aggregationHook": "0xdBabD76358897E68E4964647C1fb8Bf524f5EFdB",
     "protocolFee": "0xC9D50584F08Bf6cCD1004d14c7062044b45E3b48",
     "defaultIsm": "0xFBb1D475d2275D4643B6ba9Dae16f2F5465F9436"