diff --git a/.changeset/add-arbitrum-reddis-testnet.md b/.changeset/add-arbitrum-reddis-testnet.md
new file mode 100644
index 000000000..7f17750a1
--- /dev/null
+++ b/.changeset/add-arbitrum-reddis-testnet.md
@@ -0,0 +1,5 @@
+---
+"@usedapp/core": patch
+---
+
+⛓ Add arbitrum reddit test chain
diff --git a/packages/core/src/constants/chainId.ts b/packages/core/src/constants/chainId.ts
index 0ef0e22bd..95215c1db 100644
--- a/packages/core/src/constants/chainId.ts
+++ b/packages/core/src/constants/chainId.ts
@@ -42,6 +42,7 @@ import {
   Velas,
   VelasTestnet,
   ZkSyncTestnet,
+  ArbitrumRedditTestnet,
 } from '../model'
 
 // rough alphabet order (put network from the same chain together)
@@ -88,6 +89,7 @@ export const DEFAULT_SUPPORTED_CHAINS = [
   Velas,
   VelasTestnet,
   ZkSyncTestnet,
+  ArbitrumRedditTestnet,
 ]
 
 export enum ChainId {
@@ -134,4 +136,5 @@ export enum ChainId {
   Velas = 106,
   VelasTestnet = 111,
   ZkSyncTestnet = 280,
+  ArbitrumRedditTestnet = 5391184,
 }
diff --git a/packages/core/src/hooks/useConfig.test.tsx b/packages/core/src/hooks/useConfig.test.tsx
index 743829065..e368f5e4f 100644
--- a/packages/core/src/hooks/useConfig.test.tsx
+++ b/packages/core/src/hooks/useConfig.test.tsx
@@ -31,7 +31,7 @@ describe('useConfig', () => {
     const { result, waitForCurrent } = await renderDAppHook(() => useConfig(), { config: setup.config })
     await waitForCurrent((val) => val !== undefined)
     expect(result.error).to.be.undefined
-    expect(result.current.networks?.length).to.eq(42)
+    expect(result.current.networks?.length).to.eq(43)
     expect(result.current.notifications?.checkInterval).to.eq(500)
     expect(result.current.notifications?.expirationPeriod).to.eq(5000)
   })
diff --git a/packages/core/src/model/chain/arbitrumReddit.test.ts b/packages/core/src/model/chain/arbitrumReddit.test.ts
new file mode 100644
index 000000000..41fbc8e99
--- /dev/null
+++ b/packages/core/src/model/chain/arbitrumReddit.test.ts
@@ -0,0 +1,37 @@
+import { expect } from 'chai'
+import { TEST_ADDRESS, TEST_TX } from './test-defaults'
+import { ArbitrumRedditTestnet } from '../..'
+
+describe('ArbitrumRedditTestnet Chain', () => {
+  it('getChainId', () => {
+    expect(ArbitrumRedditTestnet.chainId).to.equal(5391184)
+  })
+
+  it('getChainName', () => {
+    expect(ArbitrumRedditTestnet.chainName).to.eq('ArbitrumRedditTestnet')
+  })
+
+  it('isTestChain', () => {
+    expect(ArbitrumRedditTestnet.isTestChain).to.be.true
+  })
+
+  it('isLocalChain', () => {
+    expect(ArbitrumRedditTestnet.isLocalChain).to.be.false
+  })
+
+  it('rpcUrl', () => {
+    expect(ArbitrumRedditTestnet.rpcUrl).to.eq('https://testnet.redditspace.com/rpc')
+  })
+
+  it('getExplorerAddressLink', () => {
+    expect(ArbitrumRedditTestnet.getExplorerAddressLink(TEST_ADDRESS)).to.eq(
+      `https://testnet.redditspace.com/address/${TEST_ADDRESS}`
+    )
+  })
+
+  it('getExplorerTransactionLink', () => {
+    expect(ArbitrumRedditTestnet.getExplorerTransactionLink(TEST_TX)).to.eq(
+      `https://testnet.redditspace.com/tx/${TEST_TX}`
+    )
+  })
+})
diff --git a/packages/core/src/model/chain/arbitrumReddit.ts b/packages/core/src/model/chain/arbitrumReddit.ts
new file mode 100644
index 000000000..c839f63c4
--- /dev/null
+++ b/packages/core/src/model/chain/arbitrumReddit.ts
@@ -0,0 +1,21 @@
+import { Chain } from '../../constants'
+import { getAddressLink, getTransactionLink } from '../../helpers/chainExplorerLink'
+
+const arbitrumRedditscanUrl = 'https://testnet.redditspace.com'
+
+export const ArbitrumRedditTestnet: Chain = {
+  chainId: 5391184,
+  chainName: 'ArbitrumRedditTestnet',
+  isTestChain: true,
+  isLocalChain: false,
+  multicallAddress: '0x722db82dea58c880d03b87885053f206f1b37136',
+  multicall2Address: '0xd4d664d419a6a845c98cc366ae1c4b24592bd5ce',
+  rpcUrl: 'https://testnet.redditspace.com/rpc',
+  blockExplorerUrl: arbitrumRedditscanUrl,
+  getExplorerAddressLink: getAddressLink(arbitrumRedditscanUrl),
+  getExplorerTransactionLink: getTransactionLink(arbitrumRedditscanUrl),
+}
+
+export default {
+  ArbitrumRedditTestnet,
+}
diff --git a/packages/core/src/model/chain/index.ts b/packages/core/src/model/chain/index.ts
index 2b1b192c0..9f6864afc 100644
--- a/packages/core/src/model/chain/index.ts
+++ b/packages/core/src/model/chain/index.ts
@@ -23,3 +23,4 @@ export * from './optimism'
 export * from './aurora'
 export * from './velas'
 export * from './zksync'
+export * from './arbitrumReddit'