diff --git a/docs/code/classes/types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md b/docs/code/classes/types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md
index 5a0688bd..67bf7490 100644
--- a/docs/code/classes/types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md
+++ b/docs/code/classes/types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md
@@ -30,6 +30,7 @@ Orchestrates creating transactions for `AlgorandClient`.
 - [assetOptIn](types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md#assetoptin)
 - [assetOptOut](types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md#assetoptout)
 - [assetTransfer](types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md#assettransfer)
+- [offlineKeyRegistration](types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md#offlinekeyregistration)
 - [onlineKeyRegistration](types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md#onlinekeyregistration)
 - [payment](types_algorand_client_transaction_creator.AlgorandClientTransactionCreator.md#payment)
 
@@ -1103,6 +1104,32 @@ await algorand.createTransaction.assetTransfer({
 
 ___
 
+### offlineKeyRegistration
+
+• **offlineKeyRegistration**: (`params`: [`OfflineKeyRegistrationParams`](../modules/types_composer.md#offlinekeyregistrationparams)) => `Promise`\<`Transaction`\>
+
+Create an offline key registration transaction.
+
+#### Type declaration
+
+▸ (`params`): `Promise`\<`Transaction`\>
+
+##### Parameters
+
+| Name | Type |
+| :------ | :------ |
+| `params` | [`OfflineKeyRegistrationParams`](../modules/types_composer.md#offlinekeyregistrationparams) |
+
+##### Returns
+
+`Promise`\<`Transaction`\>
+
+#### Defined in
+
+[src/types/algorand-client-transaction-creator.ts:692](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/algorand-client-transaction-creator.ts#L692)
+
+___
+
 ### onlineKeyRegistration
 
 • **onlineKeyRegistration**: (`params`: [`OnlineKeyRegistrationParams`](../modules/types_composer.md#onlinekeyregistrationparams)) => `Promise`\<`Transaction`\>
diff --git a/docs/code/classes/types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md b/docs/code/classes/types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md
index eb2e52c5..2983ebf7 100644
--- a/docs/code/classes/types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md
+++ b/docs/code/classes/types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md
@@ -30,6 +30,7 @@ Orchestrates sending transactions for `AlgorandClient`.
 - [assetFreeze](types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md#assetfreeze)
 - [assetOptIn](types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md#assetoptin)
 - [assetTransfer](types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md#assettransfer)
+- [offlineKeyRegistration](types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md#offlinekeyregistration)
 - [onlineKeyRegistration](types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md#onlinekeyregistration)
 - [payment](types_algorand_client_transaction_sender.AlgorandClientTransactionSender.md#payment)
 
@@ -995,6 +996,32 @@ await algorand.send.assetTransfer({
 
 ___
 
+### offlineKeyRegistration
+
+• **offlineKeyRegistration**: (`params`: [`CommonTransactionParams`](../modules/types_composer.md#commontransactionparams) & \{ `preventAccountFromEverParticipatingAgain?`: `boolean`  } & [`SendParams`](../interfaces/types_transaction.SendParams.md)) => `Promise`\<\{ `confirmation`: `PendingTransactionResponse` ; `confirmations`: `PendingTransactionResponse`[] ; `groupId`: `string` ; `returns?`: [`ABIReturn`](../modules/types_app.md#abireturn)[] ; `transaction`: `Transaction` ; `transactions`: `Transaction`[] ; `txIds`: `string`[]  }\>
+
+Register an offline key.
+
+#### Type declaration
+
+▸ (`params`): `Promise`\<\{ `confirmation`: `PendingTransactionResponse` ; `confirmations`: `PendingTransactionResponse`[] ; `groupId`: `string` ; `returns?`: [`ABIReturn`](../modules/types_app.md#abireturn)[] ; `transaction`: `Transaction` ; `transactions`: `Transaction`[] ; `txIds`: `string`[]  }\>
+
+##### Parameters
+
+| Name | Type |
+| :------ | :------ |
+| `params` | [`CommonTransactionParams`](../modules/types_composer.md#commontransactionparams) & \{ `preventAccountFromEverParticipatingAgain?`: `boolean`  } & [`SendParams`](../interfaces/types_transaction.SendParams.md) |
+
+##### Returns
+
+`Promise`\<\{ `confirmation`: `PendingTransactionResponse` ; `confirmations`: `PendingTransactionResponse`[] ; `groupId`: `string` ; `returns?`: [`ABIReturn`](../modules/types_app.md#abireturn)[] ; `transaction`: `Transaction` ; `transactions`: `Transaction`[] ; `txIds`: `string`[]  }\>
+
+#### Defined in
+
+[src/types/algorand-client-transaction-sender.ts:955](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/algorand-client-transaction-sender.ts#L955)
+
+___
+
 ### onlineKeyRegistration
 
 • **onlineKeyRegistration**: (`params`: [`CommonTransactionParams`](../modules/types_composer.md#commontransactionparams) & \{ `selectionKey`: `Uint8Array` ; `stateProofKey?`: `Uint8Array` ; `voteFirst`: `bigint` ; `voteKey`: `Uint8Array` ; `voteKeyDilution`: `bigint` ; `voteLast`: `bigint`  } & [`SendParams`](../interfaces/types_transaction.SendParams.md)) => `Promise`\<\{ `confirmation`: `PendingTransactionResponse` ; `confirmations`: `PendingTransactionResponse`[] ; `groupId`: `string` ; `returns?`: [`ABIReturn`](../modules/types_app.md#abireturn)[] ; `transaction`: `Transaction` ; `transactions`: `Transaction`[] ; `txIds`: `string`[]  }\>
diff --git a/docs/code/classes/types_composer.TransactionComposer.md b/docs/code/classes/types_composer.TransactionComposer.md
index 61672c59..f40505a7 100644
--- a/docs/code/classes/types_composer.TransactionComposer.md
+++ b/docs/code/classes/types_composer.TransactionComposer.md
@@ -43,6 +43,7 @@ TransactionComposer helps you compose and execute transactions as a transaction
 - [addAssetOptOut](types_composer.TransactionComposer.md#addassetoptout)
 - [addAssetTransfer](types_composer.TransactionComposer.md#addassettransfer)
 - [addAtc](types_composer.TransactionComposer.md#addatc)
+- [addOfflineKeyRegistration](types_composer.TransactionComposer.md#addofflinekeyregistration)
 - [addOnlineKeyRegistration](types_composer.TransactionComposer.md#addonlinekeyregistration)
 - [addPayment](types_composer.TransactionComposer.md#addpayment)
 - [addTransaction](types_composer.TransactionComposer.md#addtransaction)
@@ -675,6 +676,30 @@ The composer so you can chain method calls
 
 #### Defined in
 
+[src/types/composer.ts:770](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L770)
+
+___
+
+### addOfflineKeyRegistration
+
+▸ **addOfflineKeyRegistration**(`params`): [`TransactionComposer`](types_composer.TransactionComposer.md)
+
+Add an offline key registration transaction to the transaction group.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `params` | [`OfflineKeyRegistrationParams`](../modules/types_composer.md#offlinekeyregistrationparams) | The offline key registration transaction parameters |
+
+#### Returns
+
+[`TransactionComposer`](types_composer.TransactionComposer.md)
+
+The composer so you can chain method calls
+
+#### Defined in
+
 [src/types/composer.ts:759](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L759)
 
 ___
@@ -771,7 +796,7 @@ The built atomic transaction composer and the transactions
 
 #### Defined in
 
-[src/types/composer.ts:1220](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1220)
+[src/types/composer.ts:1241](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1241)
 
 ___
 
@@ -792,7 +817,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:1038](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1038)
+[src/types/composer.ts:1049](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1049)
 
 ___
 
@@ -813,7 +838,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:987](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L987)
+[src/types/composer.ts:998](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L998)
 
 ___
 
@@ -834,7 +859,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:967](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L967)
+[src/types/composer.ts:978](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L978)
 
 ___
 
@@ -855,7 +880,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:1002](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1002)
+[src/types/composer.ts:1013](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1013)
 
 ___
 
@@ -876,7 +901,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:1012](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1012)
+[src/types/composer.ts:1023](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1023)
 
 ___
 
@@ -897,7 +922,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:1024](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1024)
+[src/types/composer.ts:1035](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1035)
 
 ___
 
@@ -920,7 +945,7 @@ Build an ATC and return transactions ready to be incorporated into a broader set
 
 #### Defined in
 
-[src/types/composer.ts:765](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L765)
+[src/types/composer.ts:776](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L776)
 
 ___
 
@@ -932,7 +957,7 @@ ___
 
 | Name | Type |
 | :------ | :------ |
-| `params` | [`OnlineKeyRegistrationParams`](../modules/types_composer.md#onlinekeyregistrationparams) |
+| `params` | [`OnlineKeyRegistrationParams`](../modules/types_composer.md#onlinekeyregistrationparams) \| [`OfflineKeyRegistrationParams`](../modules/types_composer.md#offlinekeyregistrationparams) |
 | `suggestedParams` | `SuggestedParams` |
 
 #### Returns
@@ -941,7 +966,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:1093](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1093)
+[src/types/composer.ts:1104](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1104)
 
 ___
 
@@ -965,7 +990,7 @@ Builds an ABI method call transaction and any other associated transactions repr
 
 #### Defined in
 
-[src/types/composer.ts:831](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L831)
+[src/types/composer.ts:842](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L842)
 
 ___
 
@@ -986,7 +1011,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:955](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L955)
+[src/types/composer.ts:966](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L966)
 
 ___
 
@@ -1004,7 +1029,7 @@ The array of built transactions and any corresponding method calls
 
 #### Defined in
 
-[src/types/composer.ts:1167](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1167)
+[src/types/composer.ts:1188](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1188)
 
 ___
 
@@ -1027,7 +1052,7 @@ Builds all transaction types apart from `txnWithSigner`, `atc` and `methodCall`
 
 #### Defined in
 
-[src/types/composer.ts:1117](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1117)
+[src/types/composer.ts:1138](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1138)
 
 ___
 
@@ -1048,7 +1073,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:1144](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1144)
+[src/types/composer.ts:1165](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1165)
 
 ___
 
@@ -1070,7 +1095,7 @@ ___
 
 #### Defined in
 
-[src/types/composer.ts:786](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L786)
+[src/types/composer.ts:797](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L797)
 
 ___
 
@@ -1086,7 +1111,7 @@ Get the number of transactions currently added to this composer.
 
 #### Defined in
 
-[src/types/composer.ts:1207](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1207)
+[src/types/composer.ts:1228](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1228)
 
 ___
 
@@ -1116,7 +1141,7 @@ An alias for `composer.send(params)`.
 
 #### Defined in
 
-[src/types/composer.ts:1289](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1289)
+[src/types/composer.ts:1310](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1310)
 
 ___
 
@@ -1135,7 +1160,7 @@ The newly built atomic transaction composer and the transactions
 
 #### Defined in
 
-[src/types/composer.ts:1249](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1249)
+[src/types/composer.ts:1270](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1270)
 
 ___
 
@@ -1159,7 +1184,7 @@ The execution result
 
 #### Defined in
 
-[src/types/composer.ts:1259](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1259)
+[src/types/composer.ts:1280](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1280)
 
 ___
 
@@ -1183,7 +1208,7 @@ The simulation result
 
 #### Defined in
 
-[src/types/composer.ts:1297](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1297)
+[src/types/composer.ts:1318](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1318)
 
 ___
 
@@ -1209,4 +1234,4 @@ The binary encoded transaction note
 
 #### Defined in
 
-[src/types/composer.ts:1372](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1372)
+[src/types/composer.ts:1393](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L1393)
diff --git a/docs/code/modules/types_composer.md b/docs/code/modules/types_composer.md
index 67347ea4..ca36f088 100644
--- a/docs/code/modules/types_composer.md
+++ b/docs/code/modules/types_composer.md
@@ -34,6 +34,7 @@
 - [AssetTransferParams](types_composer.md#assettransferparams)
 - [CommonAppCallParams](types_composer.md#commonappcallparams)
 - [CommonTransactionParams](types_composer.md#commontransactionparams)
+- [OfflineKeyRegistrationParams](types_composer.md#offlinekeyregistrationparams)
 - [OnlineKeyRegistrationParams](types_composer.md#onlinekeyregistrationparams)
 - [PaymentParams](types_composer.md#paymentparams)
 - [SimulateOptions](types_composer.md#simulateoptions)
@@ -316,6 +317,18 @@ Common parameters for defining a transaction.
 
 ___
 
+### OfflineKeyRegistrationParams
+
+Ƭ **OfflineKeyRegistrationParams**: [`CommonTransactionParams`](types_composer.md#commontransactionparams) & \{ `preventAccountFromEverParticipatingAgain?`: `boolean`  }
+
+Parameters to define an offline key registration transaction.
+
+#### Defined in
+
+[src/types/composer.ts:322](https://github.com/algorandfoundation/algokit-utils-ts/blob/main/src/types/composer.ts#L322)
+
+___
+
 ### OnlineKeyRegistrationParams
 
 Ƭ **OnlineKeyRegistrationParams**: [`CommonTransactionParams`](types_composer.md#commontransactionparams) & \{ `selectionKey`: `Uint8Array` ; `stateProofKey?`: `Uint8Array` ; `voteFirst`: `bigint` ; `voteKey`: `Uint8Array` ; `voteKeyDilution`: `bigint` ; `voteLast`: `bigint`  }
@@ -376,7 +389,7 @@ ___
 
 ### Txn
 
-Ƭ **Txn**: [`PaymentParams`](types_composer.md#paymentparams) & \{ `type`: ``"pay"``  } \| [`AssetCreateParams`](types_composer.md#assetcreateparams) & \{ `type`: ``"assetCreate"``  } \| [`AssetConfigParams`](types_composer.md#assetconfigparams) & \{ `type`: ``"assetConfig"``  } \| [`AssetFreezeParams`](types_composer.md#assetfreezeparams) & \{ `type`: ``"assetFreeze"``  } \| [`AssetDestroyParams`](types_composer.md#assetdestroyparams) & \{ `type`: ``"assetDestroy"``  } \| [`AssetTransferParams`](types_composer.md#assettransferparams) & \{ `type`: ``"assetTransfer"``  } \| [`AssetOptInParams`](types_composer.md#assetoptinparams) & \{ `type`: ``"assetOptIn"``  } \| [`AssetOptOutParams`](types_composer.md#assetoptoutparams) & \{ `type`: ``"assetOptOut"``  } \| [`AppCallParams`](types_composer.md#appcallparams) \| [`AppCreateParams`](types_composer.md#appcreateparams) \| [`AppUpdateParams`](types_composer.md#appupdateparams) & \{ `type`: ``"appCall"``  } \| [`OnlineKeyRegistrationParams`](types_composer.md#onlinekeyregistrationparams) & \{ `type`: ``"keyReg"``  } \| `algosdk.TransactionWithSigner` & \{ `type`: ``"txnWithSigner"``  } \| \{ `atc`: `algosdk.AtomicTransactionComposer` ; `type`: ``"atc"``  } \| [`AppCallMethodCall`](types_composer.md#appcallmethodcall) \| [`AppCreateMethodCall`](types_composer.md#appcreatemethodcall) \| [`AppUpdateMethodCall`](types_composer.md#appupdatemethodcall) & \{ `type`: ``"methodCall"``  }
+Ƭ **Txn**: [`PaymentParams`](types_composer.md#paymentparams) & \{ `type`: ``"pay"``  } \| [`AssetCreateParams`](types_composer.md#assetcreateparams) & \{ `type`: ``"assetCreate"``  } \| [`AssetConfigParams`](types_composer.md#assetconfigparams) & \{ `type`: ``"assetConfig"``  } \| [`AssetFreezeParams`](types_composer.md#assetfreezeparams) & \{ `type`: ``"assetFreeze"``  } \| [`AssetDestroyParams`](types_composer.md#assetdestroyparams) & \{ `type`: ``"assetDestroy"``  } \| [`AssetTransferParams`](types_composer.md#assettransferparams) & \{ `type`: ``"assetTransfer"``  } \| [`AssetOptInParams`](types_composer.md#assetoptinparams) & \{ `type`: ``"assetOptIn"``  } \| [`AssetOptOutParams`](types_composer.md#assetoptoutparams) & \{ `type`: ``"assetOptOut"``  } \| [`AppCallParams`](types_composer.md#appcallparams) \| [`AppCreateParams`](types_composer.md#appcreateparams) \| [`AppUpdateParams`](types_composer.md#appupdateparams) & \{ `type`: ``"appCall"``  } \| [`OnlineKeyRegistrationParams`](types_composer.md#onlinekeyregistrationparams) \| [`OfflineKeyRegistrationParams`](types_composer.md#offlinekeyregistrationparams) & \{ `type`: ``"keyReg"``  } \| `algosdk.TransactionWithSigner` & \{ `type`: ``"txnWithSigner"``  } \| \{ `atc`: `algosdk.AtomicTransactionComposer` ; `type`: ``"atc"``  } \| [`AppCallMethodCall`](types_composer.md#appcallmethodcall) \| [`AppCreateMethodCall`](types_composer.md#appcreatemethodcall) \| [`AppUpdateMethodCall`](types_composer.md#appupdatemethodcall) & \{ `type`: ``"methodCall"``  }
 
 #### Defined in
 
diff --git a/src/types/algorand-client-transaction-creator.ts b/src/types/algorand-client-transaction-creator.ts
index d92f685d..107ecbc6 100644
--- a/src/types/algorand-client-transaction-creator.ts
+++ b/src/types/algorand-client-transaction-creator.ts
@@ -688,4 +688,6 @@ export class AlgorandClientTransactionCreator {
   appCallMethodCall = this._transactions((c) => c.addAppCallMethodCall)
   /** Create an online key registration transaction. */
   onlineKeyRegistration = this._transaction((c) => c.addOnlineKeyRegistration)
+  /** Create an offline key registration transaction. */
+  offlineKeyRegistration = this._transaction((c) => c.addOfflineKeyRegistration)
 }
diff --git a/src/types/algorand-client-transaction-sender.ts b/src/types/algorand-client-transaction-sender.ts
index d2408f8a..1d8bcf2d 100644
--- a/src/types/algorand-client-transaction-sender.ts
+++ b/src/types/algorand-client-transaction-sender.ts
@@ -950,4 +950,9 @@ export class AlgorandClientTransactionSender {
   onlineKeyRegistration = this._send((c) => c.addOnlineKeyRegistration, {
     preLog: (params, transaction) => `Registering online key for ${params.sender} via transaction ${transaction.txID()}`,
   })
+
+  /** Register an offline key. */
+  offlineKeyRegistration = this._send((c) => c.addOfflineKeyRegistration, {
+    preLog: (params, transaction) => `Registering offline key for ${params.sender} via transaction ${transaction.txID()}`,
+  })
 }
diff --git a/src/types/composer.ts b/src/types/composer.ts
index 2a2f8999..69349889 100644
--- a/src/types/composer.ts
+++ b/src/types/composer.ts
@@ -318,11 +318,11 @@ export type OnlineKeyRegistrationParams = CommonTransactionParams & {
   stateProofKey?: Uint8Array
 }
 
-// Not yet exposed because of bug in algosdk
-// export type OfflineKeyRegistrationParams = CommonTransactionParams & {
-//   /** Prevent this account from ever participating again. On network with rewards enabled, also disable rewards for this account */
-//   preventAddressFromEverParticipatingAgain?: boolean
-// }
+/** Parameters to define an offline key registration transaction. */
+export type OfflineKeyRegistrationParams = CommonTransactionParams & {
+  /** Prevent this account from ever participating again. The account will also no longer earn rewards */
+  preventAccountFromEverParticipatingAgain?: boolean
+}
 
 /** Common parameters for defining an application call transaction. */
 export type CommonAppCallParams = CommonTransactionParams & {
@@ -455,7 +455,7 @@ export type Txn =
   | (AssetOptInParams & { type: 'assetOptIn' })
   | (AssetOptOutParams & { type: 'assetOptOut' })
   | ((AppCallParams | AppCreateParams | AppUpdateParams) & { type: 'appCall' })
-  | (OnlineKeyRegistrationParams & { type: 'keyReg' })
+  | ((OnlineKeyRegistrationParams | OfflineKeyRegistrationParams) & { type: 'keyReg' })
   | (algosdk.TransactionWithSigner & { type: 'txnWithSigner' })
   | { atc: algosdk.AtomicTransactionComposer; type: 'atc' }
   | ((AppCallMethodCall | AppCreateMethodCall | AppUpdateMethodCall) & { type: 'methodCall' })
@@ -751,6 +751,17 @@ export class TransactionComposer {
     return this
   }
 
+  /**
+   * Add an offline key registration transaction to the transaction group.
+   * @param params The offline key registration transaction parameters
+   * @returns The composer so you can chain method calls
+   */
+  addOfflineKeyRegistration(params: OfflineKeyRegistrationParams): TransactionComposer {
+    this.txns.push({ ...params, type: 'keyReg' })
+
+    return this
+  }
+
   /**
    * Add the transactions within an `AtomicTransactionComposer` to the transaction group.
    * @param atc The `AtomicTransactionComposer` to build transactions from and add to the group
@@ -1090,24 +1101,34 @@ export class TransactionComposer {
     return this.commonTxnBuildStep(params, txn, suggestedParams)
   }
 
-  private buildKeyReg(params: OnlineKeyRegistrationParams, suggestedParams: algosdk.SuggestedParams) {
-    // algosdk throws when voteFirst is 0, so we need to set it to 1, then switch back to 1 after creating the transaction
-    const voteFirst = params.voteFirst === 0n ? 1n : params.voteFirst
+  private buildKeyReg(params: OnlineKeyRegistrationParams | OfflineKeyRegistrationParams, suggestedParams: algosdk.SuggestedParams) {
+    let txn: algosdk.Transaction
 
-    const txn = algosdk.makeKeyRegistrationTxnWithSuggestedParamsFromObject({
-      from: params.sender,
-      voteKey: params.voteKey,
-      selectionKey: params.selectionKey,
-      voteFirst: Number(voteFirst),
-      voteLast: Number(params.voteLast),
-      voteKeyDilution: Number(params.voteKeyDilution),
-      suggestedParams,
-      nonParticipation: false,
-      stateProofKey: params.stateProofKey as string | Uint8Array,
-    })
+    if ('voteKey' in params) {
+      // algosdk throws when voteFirst is 0, so we need to set it to 1, then switch back to 1 after creating the transaction
+      const voteFirst = params.voteFirst === 0n ? 1n : params.voteFirst
+
+      txn = algosdk.makeKeyRegistrationTxnWithSuggestedParamsFromObject({
+        from: params.sender,
+        voteKey: params.voteKey,
+        selectionKey: params.selectionKey,
+        voteFirst: Number(voteFirst),
+        voteLast: Number(params.voteLast),
+        voteKeyDilution: Number(params.voteKeyDilution),
+        suggestedParams,
+        nonParticipation: false,
+        stateProofKey: params.stateProofKey as string | Uint8Array,
+      })
 
-    if (params.voteFirst === 0n) {
-      txn.voteFirst = 0
+      if (params.voteFirst === 0n) {
+        txn.voteFirst = 0
+      }
+    } else {
+      txn = algosdk.makeKeyRegistrationTxnWithSuggestedParamsFromObject({
+        from: params.sender,
+        suggestedParams,
+        nonParticipation: params.preventAccountFromEverParticipatingAgain,
+      })
     }
 
     return this.commonTxnBuildStep(params, txn, suggestedParams)