diff --git a/packages/api-derive/src/elections/info.ts b/packages/api-derive/src/elections/info.ts
index 72f85af756..25616f9c89 100644
--- a/packages/api-derive/src/elections/info.ts
+++ b/packages/api-derive/src/elections/info.ts
@@ -4,7 +4,8 @@
 import type { Observable } from 'rxjs';
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { u32, Vec } from '@polkadot/types';
-import type { AccountId, Balance, BlockNumber, SeatHolder } from '@polkadot/types/interfaces';
+import type { AccountId, Balance, BlockNumber } from '@polkadot/types/interfaces';
+import type { PalletElectionsPhragmenSeatHolder } from '@polkadot/types/lookup';
 import type { ITuple } from '@polkadot/types/types';
 import type { DeriveElectionsInfo } from './types';
 
@@ -13,11 +14,11 @@ import { combineLatest, map, of } from 'rxjs';
 import { memo } from '../util';
 
 // SeatHolder is current tuple is 2.x-era Substrate
-type Member = SeatHolder | ITuple<[AccountId, Balance]>;
+type Member = PalletElectionsPhragmenSeatHolder | ITuple<[AccountId, Balance]>;
 
 type Candidate = AccountId | ITuple<[AccountId, Balance]>;
 
-function isSeatHolder (value: Member): value is SeatHolder {
+function isSeatHolder (value: Member): value is PalletElectionsPhragmenSeatHolder {
   return !Array.isArray(value);
 }
 
diff --git a/packages/api-derive/src/treasury/proposals.ts b/packages/api-derive/src/treasury/proposals.ts
index 8be06d1f07..237cbd4fdc 100644
--- a/packages/api-derive/src/treasury/proposals.ts
+++ b/packages/api-derive/src/treasury/proposals.ts
@@ -4,7 +4,8 @@
 import type { Observable } from 'rxjs';
 import type { ApiInterfaceRx } from '@polkadot/api/types';
 import type { Option } from '@polkadot/types';
-import type { ProposalIndex, TreasuryProposal } from '@polkadot/types/interfaces';
+import type { ProposalIndex } from '@polkadot/types/interfaces';
+import type { PalletTreasuryProposal } from '@polkadot/types/lookup';
 import type { DeriveCollectiveProposal, DeriveTreasuryProposal, DeriveTreasuryProposals } from '../types';
 
 import { combineLatest, map, of, switchMap } from 'rxjs';
@@ -13,7 +14,7 @@ import { memo } from '../util';
 
 interface Result {
   allIds: ProposalIndex[];
-  allProposals: Option<TreasuryProposal>[];
+  allProposals: Option<PalletTreasuryProposal>[];
   approvalIds: ProposalIndex[];
   councilProposals: DeriveCollectiveProposal[];
   proposalCount: ProposalIndex;
@@ -64,7 +65,7 @@ function retrieveProposals (api: ApiInterfaceRx, proposalCount: ProposalIndex, a
       ? api.derive.council.proposals()
       : of([] as DeriveCollectiveProposal[])
   ]).pipe(
-    map(([allProposals, councilProposals]: [Option<TreasuryProposal>[], DeriveCollectiveProposal[]]): DeriveTreasuryProposals =>
+    map(([allProposals, councilProposals]: [Option<PalletTreasuryProposal>[], DeriveCollectiveProposal[]]): DeriveTreasuryProposals =>
       parseResult(api, { allIds, allProposals, approvalIds, councilProposals, proposalCount })
     )
   );
diff --git a/packages/api-derive/src/types.ts b/packages/api-derive/src/types.ts
index 5b2fcc0ac0..ce3b648a55 100644
--- a/packages/api-derive/src/types.ts
+++ b/packages/api-derive/src/types.ts
@@ -2,8 +2,8 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import type { u32 } from '@polkadot/types';
-import type { Balance, BlockNumber, BountyIndex, Hash, Proposal, ProposalIndex, SetIndex, TreasuryProposal, Votes } from '@polkadot/types/interfaces';
-import type { PalletBountiesBounty } from '@polkadot/types/lookup';
+import type { Balance, BlockNumber, BountyIndex, Hash, Proposal, ProposalIndex, SetIndex, Votes } from '@polkadot/types/interfaces';
+import type { PalletBountiesBounty, PalletTreasuryProposal } from '@polkadot/types/lookup';
 import type { BN } from '@polkadot/util';
 
 export * from './accounts/types';
@@ -63,7 +63,7 @@ export type DeriveRecentlyOffline = Record<string, RecentlyOffline[]>;
 export interface DeriveTreasuryProposal {
   council: DeriveCollectiveProposal[];
   id: ProposalIndex;
-  proposal: TreasuryProposal;
+  proposal: PalletTreasuryProposal;
 }
 
 export interface DeriveTreasuryProposals {