diff --git a/README.md b/README.md
index 6983d664..c2eb8a57 100644
--- a/README.md
+++ b/README.md
@@ -78,12 +78,12 @@ npx @acala-network/chopsticks@latest dry-run --config=configs/mandala.yml --html
 
 - Dry run a preimage:
  ```
-npx @acala-network/chopsticks@latest dry-run --endpoint=wss://rpc.polkadot.io --preimage=<preimage> --open
+npx @acala-network/chopsticks@latest dry-run --endpoint=wss://polkadot-rpc.dwellir.com --preimage=<preimage> --open
  ```
 
 - Dry run a preimage and execute an extrinsic after that:
 ```
-npx @acala-network/chopsticks@latest dry-run --endpoint=wss://rpc.polkadot.io --preimage=<preimage> --extrinsic=<extrinsic> --open
+npx @acala-network/chopsticks@latest dry-run --endpoint=wss://polkadot-rpc.dwellir.com --preimage=<preimage> --extrinsic=<extrinsic> --open
 ```
 
 - Dry run a preimage and execute a call after that, make sure `mock-signature-host: true` to fake caller's signature:
diff --git a/configs/kusama.yml b/configs/kusama.yml
index 13ed3d63..3401ee5d 100644
--- a/configs/kusama.yml
+++ b/configs/kusama.yml
@@ -1,4 +1,7 @@
-endpoint: wss://kusama-rpc.polkadot.io
+endpoint:
+  - wss://kusama-rpc.dwellir.com
+  - wss://rpc.ibp.network/kusama
+  - wss://kusama-rpc.polkadot.io
 mock-signature-host: true
 block: ${env.KUSAMA_BLOCK_NUMBER}
 db: ./db.sqlite
diff --git a/packages/e2e/src/__snapshots__/hrmp.test.ts.snap b/packages/e2e/src/__snapshots__/hrmp.test.ts.snap
index 34197706..097a1f00 100644
--- a/packages/e2e/src/__snapshots__/hrmp.test.ts.snap
+++ b/packages/e2e/src/__snapshots__/hrmp.test.ts.snap
@@ -24,8 +24,8 @@ exports[`HRMP > Statemine handles horizonal messages > system events 1`] = `
       "messageHash": "(hash)",
       "messageId": "(hash)",
       "weight": {
-        "proofSize": "(rounded 3600)",
-        "refTime": "(rounded 310000000)",
+        "proofSize": "(rounded 7200)",
+        "refTime": "(rounded 300000000)",
       },
     },
     "method": "Success",
diff --git a/packages/e2e/src/build-block.test.ts b/packages/e2e/src/build-block.test.ts
index 26ae6db3..d4955882 100644
--- a/packages/e2e/src/build-block.test.ts
+++ b/packages/e2e/src/build-block.test.ts
@@ -13,21 +13,20 @@ const KUSAMA_STORAGE = {
 }
 
 describe.runIf(process.env.CI || process.env.RUN_ALL).each([
-  { chain: 'Polkadot', endpoint: 'https://rpc.polkadot.io' },
+  { chain: 'Polkadot', endpoint: ['wss://rpc.ibp.network/polkadot', 'wss://polkadot-rpc.dwellir.com'] },
   { chain: 'Statemint', endpoint: 'wss://statemint-rpc.dwellir.com' },
   // { chain: 'Polkadot Collectives', endpoint: 'wss://sys.ibp.network/collectives-polkadot' },
   { chain: 'Acala', endpoint: 'wss://acala-rpc.aca-api.network' },
 
-  { chain: 'Kusama', endpoint: 'wss://kusama-rpc.polkadot.io', storage: KUSAMA_STORAGE },
+  {
+    chain: 'Kusama',
+    endpoint: ['wss://kusama-rpc.dwellir.com', 'wss://rpc.ibp.network/kusama', 'wss://kusama-rpc.polkadot.io'],
+    storage: KUSAMA_STORAGE,
+  },
   { chain: 'Statemine', endpoint: 'wss://statemine-rpc-tn.dwellir.com' },
   {
     chain: 'Karura',
-    endpoint: [
-      'wss://karura-rpc-0.aca-api.network',
-      'wss://karura-rpc-1.aca-api.network',
-      'wss://karura-rpc-2.aca-api.network',
-      'wss://karura-rpc-3.aca-api.network',
-    ],
+    endpoint: 'wss://karura-rpc.aca-api.network',
   },
   { chain: 'Westend', endpoint: 'wss://westend-rpc.polkadot.io' },
   { chain: 'Westmint', endpoint: 'wss://westmint-rpc.polkadot.io' },
diff --git a/packages/e2e/src/dev-dry-run-ump.test.ts b/packages/e2e/src/dev-dry-run-ump.test.ts
index f5c52aa0..bae96753 100644
--- a/packages/e2e/src/dev-dry-run-ump.test.ts
+++ b/packages/e2e/src/dev-dry-run-ump.test.ts
@@ -3,7 +3,7 @@ import { describe, expect, it } from 'vitest'
 import { setupApi, ws } from './helper.js'
 
 setupApi({
-  endpoint: 'wss://rpc.polkadot.io',
+  endpoint: ['wss://polkadot-rpc.dwellir.com', 'wss://rpc.ibp.network/polkadot'],
   blockHash: '0xb012d04c56b65cfa1f47cb1f884d920f95d0097b1ed42f5da18d5e2a436c2f3e',
 })
 
diff --git a/packages/node-test/index.cjs b/packages/node-test/index.cjs
index 243ee225..4c0c4a9d 100644
--- a/packages/node-test/index.cjs
+++ b/packages/node-test/index.cjs
@@ -1,7 +1,10 @@
 const { setupWithServer, destroyWorker } = require('@acala-network/chopsticks')
 
 async function main() {
-	const server = await setupWithServer({ endpoint: 'wss://rpc.polkadot.io', db: 'db.sqlite' })
+	const server = await setupWithServer({
+		endpoint: ['wss://polkadot-rpc.dwellir.com', 'wss://rpc.ibp.network/polkadot', 'wss://rpc.polkadot.io'],
+		db: 'db.sqlite',
+	})
 	await server.chain.newBlock()
 	await server.close()
 	await destroyWorker()
diff --git a/packages/node-test/index.mjs b/packages/node-test/index.mjs
index 71707204..8a9eb3ed 100644
--- a/packages/node-test/index.mjs
+++ b/packages/node-test/index.mjs
@@ -1,6 +1,9 @@
 import { setupWithServer, destroyWorker } from '@acala-network/chopsticks'
 
-const server = await setupWithServer({ endpoint: 'wss://rpc.polkadot.io', db: 'db.sqlite' })
+const server = await setupWithServer({
+	endpoint: ['wss://polkadot-rpc.dwellir.com', 'wss://rpc.ibp.network/polkadot', 'wss://rpc.polkadot.io'],
+	db: 'db.sqlite',
+})
 await server.chain.newBlock()
 await server.close()
 await destroyWorker()