diff --git a/packages/types/src/augment/registry.ts b/packages/types/src/augment/registry.ts
index 5c5f07b32c6b..f9698c738332 100644
--- a/packages/types/src/augment/registry.ts
+++ b/packages/types/src/augment/registry.ts
@@ -21,7 +21,7 @@ import { CreatedBlock, ImportedAux } from '@polkadot/types/interfaces/engine';
 import { Account, Log } from '@polkadot/types/interfaces/evm';
 import { EcdsaSignature, Ed25519Signature, Extrinsic, ExtrinsicEra, ExtrinsicPayload, ExtrinsicPayloadUnknown, ExtrinsicPayloadV1, ExtrinsicPayloadV2, ExtrinsicPayloadV3, ExtrinsicPayloadV4, ExtrinsicSignatureV1, ExtrinsicSignatureV2, ExtrinsicSignatureV3, ExtrinsicSignatureV4, ExtrinsicUnknown, ExtrinsicV1, ExtrinsicV2, ExtrinsicV3, ExtrinsicV4, ImmortalEra, MortalEra, MultiSignature, Signature, SignerPayload, Sr25519Signature } from '@polkadot/types/interfaces/extrinsics';
 import { AssetOptions, Owner, PermissionLatest, PermissionVersions, PermissionsV1 } from '@polkadot/types/interfaces/genericAsset';
-import { AuthorityIndex, AuthorityList, AuthorityWeight, NextAuthority, PendingPause, PendingResume, SetId, StoredPendingChange, StoredState } from '@polkadot/types/interfaces/grandpa';
+import { AuthorityIndex, AuthorityList, AuthorityWeight, Equivocation, EquivocationProof, GrandpaEquivocation, GrandpaPrevote, KeyOwnerProof, NextAuthority, PendingPause, PendingResume, SetId, StoredPendingChange, StoredState } from '@polkadot/types/interfaces/grandpa';
 import { IdentityFields, IdentityInfo, IdentityInfoAdditional, IdentityJudgement, RegistrarIndex, RegistrarInfo, Registration, RegistrationJudgement } from '@polkadot/types/interfaces/identity';
 import { AuthIndex, AuthoritySignature, Heartbeat, OpaqueMultiaddr, OpaqueNetworkState, OpaquePeerId } from '@polkadot/types/interfaces/imOnline';
 import { CallMetadataV0, DoubleMapTypeLatest, DoubleMapTypeV10, DoubleMapTypeV11, DoubleMapTypeV3, DoubleMapTypeV4, DoubleMapTypeV5, DoubleMapTypeV6, DoubleMapTypeV7, DoubleMapTypeV8, DoubleMapTypeV9, ErrorMetadataV10, ErrorMetadataV11, ErrorMetadataV8, ErrorMetadataV9, EventMetadataLatest, EventMetadataV0, EventMetadataV1, EventMetadataV10, EventMetadataV11, EventMetadataV2, EventMetadataV3, EventMetadataV4, EventMetadataV5, EventMetadataV6, EventMetadataV7, EventMetadataV8, EventMetadataV9, ExtrinsicMetadataLatest, ExtrinsicMetadataV11, FunctionArgumentMetadataLatest, FunctionArgumentMetadataV0, FunctionArgumentMetadataV1, FunctionArgumentMetadataV10, FunctionArgumentMetadataV11, FunctionArgumentMetadataV2, FunctionArgumentMetadataV3, FunctionArgumentMetadataV4, FunctionArgumentMetadataV5, FunctionArgumentMetadataV6, FunctionArgumentMetadataV7, FunctionArgumentMetadataV8, FunctionArgumentMetadataV9, FunctionMetadataLatest, FunctionMetadataV0, FunctionMetadataV1, FunctionMetadataV10, FunctionMetadataV11, FunctionMetadataV2, FunctionMetadataV3, FunctionMetadataV4, FunctionMetadataV5, FunctionMetadataV6, FunctionMetadataV7, FunctionMetadataV8, FunctionMetadataV9, MapTypeLatest, MapTypeV0, MapTypeV10, MapTypeV11, MapTypeV2, MapTypeV3, MapTypeV4, MapTypeV5, MapTypeV6, MapTypeV7, MapTypeV8, MapTypeV9, MetadataAll, MetadataLatest, MetadataV0, MetadataV1, MetadataV10, MetadataV11, MetadataV2, MetadataV3, MetadataV4, MetadataV5, MetadataV6, MetadataV7, MetadataV8, MetadataV9, ModuleConstantMetadataLatest, ModuleConstantMetadataV10, ModuleConstantMetadataV11, ModuleConstantMetadataV6, ModuleConstantMetadataV7, ModuleConstantMetadataV8, ModuleConstantMetadataV9, ModuleMetadataLatest, ModuleMetadataV0, ModuleMetadataV1, ModuleMetadataV10, ModuleMetadataV11, ModuleMetadataV2, ModuleMetadataV3, ModuleMetadataV4, ModuleMetadataV5, ModuleMetadataV6, ModuleMetadataV7, ModuleMetadataV8, ModuleMetadataV9, OuterDispatchCallV0, OuterDispatchMetadataV0, OuterEventEventMetadataEventsV0, OuterEventEventMetadataV0, OuterEventMetadataV0, PlainTypeLatest, PlainTypeV0, PlainTypeV10, PlainTypeV11, PlainTypeV2, PlainTypeV3, PlainTypeV4, PlainTypeV5, PlainTypeV6, PlainTypeV7, PlainTypeV8, PlainTypeV9, RuntimeModuleMetadataV0, StorageEntryMetadataLatest, StorageEntryMetadataV10, StorageEntryMetadataV11, StorageEntryMetadataV6, StorageEntryMetadataV7, StorageEntryMetadataV8, StorageEntryMetadataV9, StorageEntryModifierLatest, StorageEntryModifierV10, StorageEntryModifierV11, StorageEntryModifierV6, StorageEntryModifierV7, StorageEntryModifierV8, StorageEntryModifierV9, StorageEntryTypeLatest, StorageEntryTypeV10, StorageEntryTypeV11, StorageEntryTypeV6, StorageEntryTypeV7, StorageEntryTypeV8, StorageEntryTypeV9, StorageFunctionMetadataV0, StorageFunctionMetadataV1, StorageFunctionMetadataV2, StorageFunctionMetadataV3, StorageFunctionMetadataV4, StorageFunctionMetadataV5, StorageFunctionModifierV0, StorageFunctionModifierV1, StorageFunctionModifierV2, StorageFunctionModifierV3, StorageFunctionModifierV4, StorageFunctionModifierV5, StorageFunctionTypeV0, StorageFunctionTypeV1, StorageFunctionTypeV2, StorageFunctionTypeV3, StorageFunctionTypeV4, StorageFunctionTypeV5, StorageHasher, StorageHasherV10, StorageHasherV11, StorageHasherV4, StorageHasherV5, StorageHasherV6, StorageHasherV7, StorageHasherV8, StorageHasherV9, StorageMetadataLatest, StorageMetadataV0, StorageMetadataV10, StorageMetadataV11, StorageMetadataV7, StorageMetadataV8, StorageMetadataV9 } from '@polkadot/types/interfaces/metadata';
@@ -33,7 +33,7 @@ import { ActiveRecovery, RecoveryConfig } from '@polkadot/types/interfaces/recov
 import { RpcMethods } from '@polkadot/types/interfaces/rpc';
 import { AccountId, AccountIdOf, AccountIndex, Address, AssetId, Balance, BalanceOf, Block, BlockNumber, Call, ChangesTrieConfiguration, Consensus, ConsensusEngineId, Digest, DigestItem, DispatchClass, DispatchInfo, DispatchInfoTo190, Fixed128, Fixed64, H160, H256, H512, Hash, Header, Index, Justification, KeyTypeId, KeyValue, LockIdentifier, LookupSource, LookupTarget, ModuleId, Moment, Origin, Perbill, Percent, Permill, Perquintill, Phantom, PhantomData, PreRuntime, RuntimeDbWeight, Seal, SealV0, SignedBlock, StorageData, ValidatorId, Weight, WeightMultiplier } from '@polkadot/types/interfaces/runtime';
 import { SchedulePeriod, SchedulePriority, Scheduled, TaskAddress } from '@polkadot/types/interfaces/scheduler';
-import { FullIdentification, IdentificationTuple, Keys, SessionIndex, SessionKeys1, SessionKeys2, SessionKeys3, SessionKeys4, SessionKeys5, SessionKeys6 } from '@polkadot/types/interfaces/session';
+import { FullIdentification, IdentificationTuple, Keys, MembershipProof, SessionIndex, SessionKeys1, SessionKeys2, SessionKeys3, SessionKeys4, SessionKeys5, SessionKeys6, ValidatorCount } from '@polkadot/types/interfaces/session';
 import { Bid, BidKind, SocietyJudgement, SocietyVote, StrikeCount, VouchingStatus } from '@polkadot/types/interfaces/society';
 import { ActiveEraInfo, CompactAssignments, CompactScore, ElectionCompute, ElectionResult, ElectionStatus, EraIndex, EraPoints, EraRewardPoints, EraRewards, Exposure, Forcing, IndividualExposure, KeyType, MomentOf, Nominations, NominatorIndex, OffchainAccuracy, PerU16, PhragmenScore, Points, ReleasesStaking, RewardDestination, RewardPoint, SlashJournalEntry, SlashingSpans, SlashingSpansTo204, SpanIndex, SpanRecord, StakingLedger, StakingLedgerTo223, StakingLedgerTo240, UnappliedSlash, UnappliedSlashOther, UnlockChunk, ValidatorIndex, ValidatorPrefs, ValidatorPrefsTo145, ValidatorPrefsTo196 } from '@polkadot/types/interfaces/staking';
 import { ApiId, KeyValueOption, ReadProof, RuntimeVersion, RuntimeVersionApi, StorageChangeSet } from '@polkadot/types/interfaces/state';
@@ -633,6 +633,21 @@ declare module '@polkadot/types/types/registry' {
     'Compact<AuthorityWeight>': Compact<AuthorityWeight>;
     'Option<AuthorityWeight>': Option<AuthorityWeight>;
     'Vec<AuthorityWeight>': Vec<AuthorityWeight>;
+    Equivocation: Equivocation;
+    'Option<Equivocation>': Option<Equivocation>;
+    'Vec<Equivocation>': Vec<Equivocation>;
+    EquivocationProof: EquivocationProof;
+    'Option<EquivocationProof>': Option<EquivocationProof>;
+    'Vec<EquivocationProof>': Vec<EquivocationProof>;
+    GrandpaEquivocation: GrandpaEquivocation;
+    'Option<GrandpaEquivocation>': Option<GrandpaEquivocation>;
+    'Vec<GrandpaEquivocation>': Vec<GrandpaEquivocation>;
+    GrandpaPrevote: GrandpaPrevote;
+    'Option<GrandpaPrevote>': Option<GrandpaPrevote>;
+    'Vec<GrandpaPrevote>': Vec<GrandpaPrevote>;
+    KeyOwnerProof: KeyOwnerProof;
+    'Option<KeyOwnerProof>': Option<KeyOwnerProof>;
+    'Vec<KeyOwnerProof>': Vec<KeyOwnerProof>;
     NextAuthority: NextAuthority;
     'Option<NextAuthority>': Option<NextAuthority>;
     'Vec<NextAuthority>': Vec<NextAuthority>;
@@ -763,10 +778,17 @@ declare module '@polkadot/types/types/registry' {
     IdentificationTuple: IdentificationTuple;
     'Option<IdentificationTuple>': Option<IdentificationTuple>;
     'Vec<IdentificationTuple>': Vec<IdentificationTuple>;
+    MembershipProof: MembershipProof;
+    'Option<MembershipProof>': Option<MembershipProof>;
+    'Vec<MembershipProof>': Vec<MembershipProof>;
     SessionIndex: SessionIndex;
     'Compact<SessionIndex>': Compact<SessionIndex>;
     'Option<SessionIndex>': Option<SessionIndex>;
     'Vec<SessionIndex>': Vec<SessionIndex>;
+    ValidatorCount: ValidatorCount;
+    'Compact<ValidatorCount>': Compact<ValidatorCount>;
+    'Option<ValidatorCount>': Option<ValidatorCount>;
+    'Vec<ValidatorCount>': Vec<ValidatorCount>;
     Bid: Bid;
     'Option<Bid>': Option<Bid>;
     'Vec<Bid>': Vec<Bid>;
diff --git a/packages/types/src/extrinsic/signedExtensions/substrate.ts b/packages/types/src/extrinsic/signedExtensions/substrate.ts
index dc498d32cd33..b31d4459fe7c 100644
--- a/packages/types/src/extrinsic/signedExtensions/substrate.ts
+++ b/packages/types/src/extrinsic/signedExtensions/substrate.ts
@@ -48,5 +48,9 @@ export default {
   LockStakingStatus: {
     extra: {},
     types: {}
+  },
+  ValidateEquivocationReport: {
+    extra: {},
+    types: {}
   }
 } as ExtDef;
diff --git a/packages/types/src/interfaces/grandpa/definitions.ts b/packages/types/src/interfaces/grandpa/definitions.ts
index 4903c79c00ce..28d77a300f77 100644
--- a/packages/types/src/interfaces/grandpa/definitions.ts
+++ b/packages/types/src/interfaces/grandpa/definitions.ts
@@ -13,6 +13,27 @@ export default {
     AuthorityIndex: 'u64',
     AuthorityList: 'Vec<NextAuthority>',
     AuthorityWeight: 'u64',
+    Equivocation: {
+      _enum: {
+        Prevote: 'GrandpaEquivocation',
+        Precommit: 'GrandpaEquivocation'
+      }
+    },
+    EquivocationProof: {
+      setId: 'SetId',
+      equivocation: 'Equivocation'
+    },
+    GrandpaEquivocation: {
+      roundNumber: 'u64',
+      identity: 'AuthorityId',
+      first: '(GrandpaPrevote, AuthoritySignature)',
+      second: '(GrandpaPrevote, AuthoritySignature)'
+    },
+    GrandpaPrevote: {
+      targetHash: 'Hash',
+      targetNumber: 'BlockNumber'
+    },
+    KeyOwnerProof: 'MembershipProof',
     NextAuthority: '(AuthorityId, AuthorityWeight)',
     PendingPause: {
       /// Block at which the intention to pause was scheduled.
diff --git a/packages/types/src/interfaces/grandpa/types.ts b/packages/types/src/interfaces/grandpa/types.ts
index e140ffbf6376..8dde9b92d593 100644
--- a/packages/types/src/interfaces/grandpa/types.ts
+++ b/packages/types/src/interfaces/grandpa/types.ts
@@ -5,7 +5,9 @@ import { ITuple } from '@polkadot/types/types';
 import { Enum, Struct, Vec } from '@polkadot/types/codec';
 import { u64 } from '@polkadot/types/primitive';
 import { AuthorityId } from '@polkadot/types/interfaces/consensus';
-import { BlockNumber } from '@polkadot/types/interfaces/runtime';
+import { AuthoritySignature } from '@polkadot/types/interfaces/imOnline';
+import { BlockNumber, Hash } from '@polkadot/types/interfaces/runtime';
+import { MembershipProof } from '@polkadot/types/interfaces/session';
 
 /** @name AuthorityIndex */
 export interface AuthorityIndex extends u64 {}
@@ -16,6 +18,37 @@ export interface AuthorityList extends Vec<NextAuthority> {}
 /** @name AuthorityWeight */
 export interface AuthorityWeight extends u64 {}
 
+/** @name Equivocation */
+export interface Equivocation extends Enum {
+  readonly isPrevote: boolean;
+  readonly asPrevote: GrandpaEquivocation;
+  readonly isPrecommit: boolean;
+  readonly asPrecommit: GrandpaEquivocation;
+}
+
+/** @name EquivocationProof */
+export interface EquivocationProof extends Struct {
+  readonly setId: SetId;
+  readonly equivocation: Equivocation;
+}
+
+/** @name GrandpaEquivocation */
+export interface GrandpaEquivocation extends Struct {
+  readonly roundNumber: u64;
+  readonly identity: AuthorityId;
+  readonly first: ITuple<[GrandpaPrevote, AuthoritySignature]>;
+  readonly second: ITuple<[GrandpaPrevote, AuthoritySignature]>;
+}
+
+/** @name GrandpaPrevote */
+export interface GrandpaPrevote extends Struct {
+  readonly targetHash: Hash;
+  readonly targetNumber: BlockNumber;
+}
+
+/** @name KeyOwnerProof */
+export interface KeyOwnerProof extends MembershipProof {}
+
 /** @name NextAuthority */
 export interface NextAuthority extends ITuple<[AuthorityId, AuthorityWeight]> {}
 
diff --git a/packages/types/src/interfaces/session/definitions.ts b/packages/types/src/interfaces/session/definitions.ts
index 8c7f4dc8924c..ea087a4fe780 100644
--- a/packages/types/src/interfaces/session/definitions.ts
+++ b/packages/types/src/interfaces/session/definitions.ts
@@ -34,6 +34,12 @@ export default {
     ...keyTypes,
     FullIdentification: 'Exposure',
     IdentificationTuple: '(ValidatorId, FullIdentification)',
-    SessionIndex: 'u32'
+    MembershipProof: {
+      session: 'SessionIndex',
+      trieNodes: 'Vec<Vec<u8>>',
+      validatorCount: 'ValidatorCount'
+    },
+    SessionIndex: 'u32',
+    ValidatorCount: 'u32'
   }
 } as Definitions;
diff --git a/packages/types/src/interfaces/session/types.ts b/packages/types/src/interfaces/session/types.ts
index 07a5622ff669..277a07403c50 100644
--- a/packages/types/src/interfaces/session/types.ts
+++ b/packages/types/src/interfaces/session/types.ts
@@ -2,7 +2,8 @@
 /* eslint-disable */
 
 import { ITuple } from '@polkadot/types/types';
-import { u32 } from '@polkadot/types/primitive';
+import { Struct, Vec } from '@polkadot/types/codec';
+import { Bytes, u32 } from '@polkadot/types/primitive';
 import { AccountId, ValidatorId } from '@polkadot/types/interfaces/runtime';
 import { Exposure } from '@polkadot/types/interfaces/staking';
 
@@ -15,6 +16,13 @@ export interface IdentificationTuple extends ITuple<[ValidatorId, FullIdentifica
 /** @name Keys */
 export interface Keys extends SessionKeys4 {}
 
+/** @name MembershipProof */
+export interface MembershipProof extends Struct {
+  readonly session: SessionIndex;
+  readonly trieNodes: Vec<Bytes>;
+  readonly validatorCount: ValidatorCount;
+}
+
 /** @name SessionIndex */
 export interface SessionIndex extends u32 {}
 
@@ -36,4 +44,7 @@ export interface SessionKeys5 extends ITuple<[AccountId, AccountId, AccountId, A
 /** @name SessionKeys6 */
 export interface SessionKeys6 extends ITuple<[AccountId, AccountId, AccountId, AccountId, AccountId, AccountId]> {}
 
+/** @name ValidatorCount */
+export interface ValidatorCount extends u32 {}
+
 export type PHANTOM_SESSION = 'session';