diff --git a/package.json b/package.json
index e57c11a5f60e..2baef4a9e4d1 100644
--- a/package.json
+++ b/package.json
@@ -33,10 +33,10 @@
     "afterSign": "electron-builder-notarize"
   },
   "resolutions": {
-    "@polkadot/api": "^1.28.0-beta.3",
-    "@polkadot/api-contract": "^1.28.0-beta.3",
+    "@polkadot/api": "^1.28.0-beta.4",
+    "@polkadot/api-contract": "^1.28.0-beta.4",
     "@polkadot/keyring": "^3.1.0-beta.4",
-    "@polkadot/types": "^1.28.0-beta.3",
+    "@polkadot/types": "^1.28.0-beta.4",
     "@polkadot/util": "^3.1.0-beta.4",
     "@polkadot/util-crypto": "^3.1.0-beta.4",
     "@polkadot/wasm-crypto": "^1.3.0-beta.29",
diff --git a/packages/apps-config/src/api/spec/centrifuge-chain.ts b/packages/apps-config/src/api/spec/centrifuge-chain.ts
index 74a69723fbfd..87bb1c53133c 100644
--- a/packages/apps-config/src/api/spec/centrifuge-chain.ts
+++ b/packages/apps-config/src/api/spec/centrifuge-chain.ts
@@ -24,5 +24,19 @@ export default {
   Proof: {
     leafHash: 'H256',
     sortedHashes: 'H256'
-  }
+  },
+  // MultiAccount
+  MultiAccountData: {
+    threshold: 'u16',
+    signatories: 'Vec<AccountId>',
+    deposit: 'Balance',
+    depositor: 'AccountId'
+  },
+  Address: 'GenericAddress',
+  LookupSource: 'GenericAddress',
+  // Bridge constants
+  ChainId: 'u8',
+  ResourceId: '[u8; 32]',
+  'chainbridge::ChainId': 'u8',
+  DepositNonce: 'u64'
 };
diff --git a/packages/apps-config/src/settings/endpoints.ts b/packages/apps-config/src/settings/endpoints.ts
index cdd1ce342b0e..ac9531c29b06 100644
--- a/packages/apps-config/src/settings/endpoints.ts
+++ b/packages/apps-config/src/settings/endpoints.ts
@@ -118,6 +118,11 @@ function createTest (t: TFunction): LinkOption[] {
       value: 'wss://track-rpc.polkadot.io'
     },
     // alphabetical based on chain name
+    {
+      info: 'amber',
+      text: t<string>('rpc.amber', 'Amber (Centrifuge Testnet, hosted by Centrifuge)', { ns: 'apps-config' }),
+      value: 'wss://fullnode.amber.centrifuge.io'
+    },
     {
       info: 'nodle',
       text: t<string>('rpc.arcadia', 'Arcadia (Nodle Testnet, hosted by Nodle)', { ns: 'apps-config' }),
diff --git a/packages/page-contracts/package.json b/packages/page-contracts/package.json
index ca4d4109c960..f731b0b9c7e9 100644
--- a/packages/page-contracts/package.json
+++ b/packages/page-contracts/package.json
@@ -12,6 +12,6 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/api-contract": "^1.28.0-beta.3"
+    "@polkadot/api-contract": "^1.28.0-beta.4"
   }
 }
diff --git a/packages/react-api/package.json b/packages/react-api/package.json
index cdf83d1e6dd9..77e498fac5f4 100644
--- a/packages/react-api/package.json
+++ b/packages/react-api/package.json
@@ -31,7 +31,7 @@
   "homepage": "https://github.com/polkadot-js/ui/tree/master/packages/ui-reactive#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/api": "^1.28.0-beta.3",
+    "@polkadot/api": "^1.28.0-beta.4",
     "@polkadot/extension-dapp": "^0.33.0-beta.1",
     "rxjs-compat": "^6.6.2"
   }
diff --git a/yarn.lock b/yarn.lock
index ad6892447fbe..5127b646bc6f 100644
--- a/yarn.lock
+++ b/yarn.lock
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     rxjs: ^6.6.2
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-    "@polkadot/types": 1.28.0-beta.3
-    "@polkadot/types-known": 1.28.0-beta.3
+    "@polkadot/metadata": 1.28.0-beta.4
+    "@polkadot/rpc-core": 1.28.0-beta.4
+    "@polkadot/rpc-provider": 1.28.0-beta.4
+    "@polkadot/types": 1.28.0-beta.4
+    "@polkadot/types-known": 1.28.0-beta.4
     "@polkadot/util": ^3.1.0-beta.4
     "@polkadot/util-crypto": ^3.1.0-beta.4
     bn.js: ^5.1.2
     eventemitter3: ^4.0.4
     rxjs: ^6.6.2
-  checksum: a5226589e7f2a0f59ff11ff13e0ee2575d7522ac26880d925916a4883930a532d8092d04fb6ff9325ab737a72cdf94ac7a9e75ea208954b14dec9dc7fc3a78e0
+  checksum: 3e93ab79daf4b059892d87730831e63181fe1faf21275674a5772b4df358d3a863f491ef0c94dd3753173e98dec5f113fde750f956157d58462d7d9ee45b30e3
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@@ -3112,7 +3112,7 @@ __metadata:
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   dependencies:
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-    "@polkadot/api-contract": ^1.28.0-beta.3
+    "@polkadot/api-contract": ^1.28.0-beta.4
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@@ -3480,17 +3480,17 @@ __metadata:
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-  resolution: "@polkadot/metadata@npm:1.28.0-beta.3"
+"@polkadot/metadata@npm:1.28.0-beta.4":
+  version: 1.28.0-beta.4
+  resolution: "@polkadot/metadata@npm:1.28.0-beta.4"
   dependencies:
     "@babel/runtime": ^7.11.2
-    "@polkadot/types": 1.28.0-beta.3
-    "@polkadot/types-known": 1.28.0-beta.3
+    "@polkadot/types": 1.28.0-beta.4
+    "@polkadot/types-known": 1.28.0-beta.4
     "@polkadot/util": ^3.1.0-beta.4
     "@polkadot/util-crypto": ^3.1.0-beta.4
     bn.js: ^5.1.2
-  checksum: c1ef5b73d01e061ef7484eda816198267882452705f1fe59db93859ef6fa8be075e914e9596e7c787de7b97323b0d35d470b9a56c07bb277edaa03b02bf8f505
+  checksum: 86c99d8a22c25136c7878b38dd4975cd1da03832ec9f4fd14f19bcfd0b1b0511e915c75d705aa804b38aa03eee8f101f8b9f201fc6c924be3bff50b119d1f8aa
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@@ -3499,7 +3499,7 @@ __metadata:
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   dependencies:
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-    "@polkadot/api": ^1.28.0-beta.3
+    "@polkadot/api": ^1.28.0-beta.4
     "@polkadot/extension-dapp": ^0.33.0-beta.1
     rxjs-compat: ^6.6.2
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@@ -3622,35 +3622,35 @@ __metadata:
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-  resolution: "@polkadot/rpc-core@npm:1.28.0-beta.3"
+"@polkadot/rpc-core@npm:1.28.0-beta.4":
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-    "@polkadot/rpc-provider": 1.28.0-beta.3
-    "@polkadot/types": 1.28.0-beta.3
+    "@polkadot/metadata": 1.28.0-beta.4
+    "@polkadot/rpc-provider": 1.28.0-beta.4
+    "@polkadot/types": 1.28.0-beta.4
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     memoizee: ^0.4.14
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+"@polkadot/rpc-provider@npm:1.28.0-beta.4":
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+  resolution: "@polkadot/rpc-provider@npm:1.28.0-beta.4"
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-    "@polkadot/metadata": 1.28.0-beta.3
-    "@polkadot/types": 1.28.0-beta.3
+    "@polkadot/metadata": 1.28.0-beta.4
+    "@polkadot/types": 1.28.0-beta.4
     "@polkadot/util": ^3.1.0-beta.4
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