diff --git a/app/frontend/wallet/shelley/shelley-bitbox02-crypto-provider.ts b/app/frontend/wallet/shelley/shelley-bitbox02-crypto-provider.ts
index 409cfe8771..e04a0c64fa 100644
--- a/app/frontend/wallet/shelley/shelley-bitbox02-crypto-provider.ts
+++ b/app/frontend/wallet/shelley/shelley-bitbox02-crypto-provider.ts
@@ -8,9 +8,11 @@ import {
   CryptoProviderType,
   Network,
   TxCertificate,
+  TxDRepType,
   TxInput,
   TxOutput,
   TxShelleyWitness,
+  TxVoteDelegationCert,
 } from '../types'
 import {encodeCbor} from '../helpers/cbor'
 import {safeAssertUnreachable} from '../../helpers/common'
@@ -18,6 +20,7 @@ import {safeAssertUnreachable} from '../../helpers/common'
 import type {
   CardanoAssetGroup,
   CardanoCertificate,
+  CardanoDrepType,
   CardanoInput,
   CardanoOutput,
   CardanoShelleyWitness,
@@ -175,6 +178,23 @@ const ShelleyBitBox02CryptoProvider = async ({
     }
   }
 
+  const prepareVoteDelegation = (
+    voteDelegation: TxVoteDelegationCert,
+    addressToAbsPathMapper: AddressToPathMapper
+  ): CardanoCertificate => {
+    switch (voteDelegation.dRep.type) {
+      case TxDRepType.ALWAYS_ABSTAIN:
+        return {
+          voteDelegation: {
+            keypath: addressToAbsPathMapper(voteDelegation.stakingAddress),
+            type: 'alwaysAbstain',
+          },
+        }
+      default:
+        return safeAssertUnreachable(voteDelegation.dRep.type)
+    }
+  }
+
   const prepareCertificate = (
     certificate: TxCertificate,
     addressToAbsPathMapper: AddressToPathMapper
@@ -200,13 +220,7 @@ const ShelleyBitBox02CryptoProvider = async ({
           },
         }
       case CertificateType.VOTE_DELEGATION:
-        return {
-          voteDelegation: {
-            keypath: addressToAbsPathMapper(certificate.stakingAddress),
-            type: certificate.dRep.type,
-            drepCredhash: null,
-          },
-        }
+        return prepareVoteDelegation(certificate, addressToAbsPathMapper)
       case CertificateType.STAKEPOOL_REGISTRATION:
         throw new UnexpectedError(UnexpectedErrorReason.UnsupportedOperationError, {
           message: 'Stakepool registration not supported',
diff --git a/app/libs/bitbox-api/bitbox_api.d.ts b/app/libs/bitbox-api/bitbox_api.d.ts
index 332ea361a3..acaed3cf06 100644
--- a/app/libs/bitbox-api/bitbox_api.d.ts
+++ b/app/libs/bitbox-api/bitbox_api.d.ts
@@ -135,6 +135,7 @@ type CardanoOutput = {
   scriptConfig?: CardanoScriptConfig;
   assetGroups?: CardanoAssetGroup[];
 }
+type CardanoDrepType = 'keyHash'  | 'scriptHash' | 'alwaysAbstain'  | 'alwaysNoConfidence'
 type CardanoCertificate =
   | {
       stakeRegistration: {
@@ -155,8 +156,8 @@ type CardanoCertificate =
   | {
       voteDelegation: {
         keypath: Keypath
-        type: number
-        drepCredhash: Uint8Array | undefined | null
+        type: CardanoDrepType
+        drepCredHash?: Uint8Array
       }
     };
 type CardanoWithdrawal = {
diff --git a/app/libs/bitbox-api/bitbox_api_bg.js b/app/libs/bitbox-api/bitbox_api_bg.js
index aa12fd23a2..a0a01002fd 100644
--- a/app/libs/bitbox-api/bitbox_api_bg.js
+++ b/app/libs/bitbox-api/bitbox_api_bg.js
@@ -1238,7 +1238,7 @@ export function __wbindgen_memory() {
     return addHeapObject(ret);
 };
 
-export function __wbindgen_closure_wrapper2347(arg0, arg1, arg2) {
+export function __wbindgen_closure_wrapper2355(arg0, arg1, arg2) {
     const ret = makeMutClosure(arg0, arg1, 247, __wbg_adapter_52);
     return addHeapObject(ret);
 };
diff --git a/app/libs/bitbox-api/bitbox_api_bg.wasm b/app/libs/bitbox-api/bitbox_api_bg.wasm
index 8662c61a0d..684d2ca5c9 100644
Binary files a/app/libs/bitbox-api/bitbox_api_bg.wasm and b/app/libs/bitbox-api/bitbox_api_bg.wasm differ