diff --git a/.changeset/polite-icons-dress.md b/.changeset/polite-icons-dress.md
new file mode 100644
index 00000000..a870eb23
--- /dev/null
+++ b/.changeset/polite-icons-dress.md
@@ -0,0 +1,6 @@
+---
+'@api3/chains': minor
+---
+
+Add following chain:
+* soneium-sepolia-testnet
\ No newline at end of file
diff --git a/chains/soneium-sepolia-testnet.json b/chains/soneium-sepolia-testnet.json
new file mode 100644
index 00000000..3740f442
--- /dev/null
+++ b/chains/soneium-sepolia-testnet.json
@@ -0,0 +1,23 @@
+{
+  "alias": "soneium-sepolia-testnet",
+  "decimals": 18,
+  "explorer": {
+    "api": {
+      "key": {
+        "required": false
+      },
+      "url": "https://explorer-testnet.soneium.org/api"
+    },
+    "browserUrl": "https://explorer-testnet.soneium.org/"
+  },
+  "id": "1946",
+  "name": "Soneium testnet",
+  "providers": [
+    {
+      "alias": "default",
+      "rpcUrl": "https://rpc.minato.soneium.org/"
+    }
+  ],
+  "symbol": "ETH",
+  "testnet": true
+}
diff --git a/src/generated/chains.ts b/src/generated/chains.ts
index 690c7578..c4c70a34 100644
--- a/src/generated/chains.ts
+++ b/src/generated/chains.ts
@@ -1517,6 +1517,19 @@ export const CHAINS: Chain[] = [
     symbol: 'SEI',
     testnet: false,
   },
+  {
+    alias: 'soneium-sepolia-testnet',
+    decimals: 18,
+    explorer: {
+      api: { key: { required: false }, url: 'https://explorer-testnet.soneium.org/api' },
+      browserUrl: 'https://explorer-testnet.soneium.org/',
+    },
+    id: '1946',
+    name: 'Soneium testnet',
+    providers: [{ alias: 'default', rpcUrl: 'https://rpc.minato.soneium.org/' }],
+    symbol: 'ETH',
+    testnet: true,
+  },
   {
     alias: 'sonic-testnet',
     decimals: 18,