diff --git a/package.json b/package.json
index 615a345e7f..454c83742b 100644
--- a/package.json
+++ b/package.json
@@ -34,5 +34,5 @@
     "@types/jest": "^26.0.23",
     "copyfiles": "^2.4.1"
   },
-  "version": "4.15.1"
+  "version": "4.15.2-0"
 }
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index ee0cd993cb..9054ccbe2b 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-contract",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Interfaces for interacting with contracts and contract ABIs",
   "main": "index.js",
@@ -20,8 +20,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-contract#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/api": "4.15.1",
-    "@polkadot/types": "4.15.1",
+    "@polkadot/api": "4.15.2-0",
+    "@polkadot/types": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/x-rxjs": "^6.9.1"
   }
diff --git a/packages/api-contract/src/packageInfo.ts b/packages/api-contract/src/packageInfo.ts
index 669398bf95..63b1b0a9e4 100644
--- a/packages/api-contract/src/packageInfo.ts
+++ b/packages/api-contract/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/api-contract', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/api-contract', version: '4.15.2-0' };
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index 5120cdd394..c80d5bd6a7 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Common functions used across Polkadot, derived from RPC calls and storage queries.",
   "main": "index.js",
@@ -20,15 +20,15 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-derive#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/api": "4.15.1",
-    "@polkadot/rpc-core": "4.15.1",
-    "@polkadot/types": "4.15.1",
+    "@polkadot/api": "4.15.2-0",
+    "@polkadot/rpc-core": "4.15.2-0",
+    "@polkadot/types": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/util-crypto": "^6.9.1",
     "@polkadot/x-rxjs": "^6.9.1"
   },
   "devDependencies": {
     "@polkadot/keyring": "^6.9.1",
-    "@polkadot/rpc-provider": "4.15.1"
+    "@polkadot/rpc-provider": "4.15.2-0"
   }
 }
diff --git a/packages/api-derive/src/packageInfo.ts b/packages/api-derive/src/packageInfo.ts
index e612bf9cd0..068df67bfc 100644
--- a/packages/api-derive/src/packageInfo.ts
+++ b/packages/api-derive/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/api-derive', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/api-derive', version: '4.15.2-0' };
diff --git a/packages/api/package.json b/packages/api/package.json
index a3d896ee35..2b03f69ea3 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
   "main": "index.js",
@@ -20,13 +20,13 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/api-derive": "4.15.1",
+    "@polkadot/api-derive": "4.15.2-0",
     "@polkadot/keyring": "^6.9.1",
-    "@polkadot/metadata": "4.15.1",
-    "@polkadot/rpc-core": "4.15.1",
-    "@polkadot/rpc-provider": "4.15.1",
-    "@polkadot/types": "4.15.1",
-    "@polkadot/types-known": "4.15.1",
+    "@polkadot/metadata": "4.15.2-0",
+    "@polkadot/rpc-core": "4.15.2-0",
+    "@polkadot/rpc-provider": "4.15.2-0",
+    "@polkadot/types": "4.15.2-0",
+    "@polkadot/types-known": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/util-crypto": "^6.9.1",
     "@polkadot/x-rxjs": "^6.9.1",
diff --git a/packages/api/src/augment/errors.ts b/packages/api/src/augment/errors.ts
index 67e519fd69..f46cc1a40c 100644
--- a/packages/api/src/augment/errors.ts
+++ b/packages/api/src/augment/errors.ts
@@ -551,6 +551,10 @@ declare module '@polkadot/api/types/errors' {
       [key: string]: AugmentedError<ApiType>;
     };
     electionProviderMultiPhase: {
+      /**
+       * The call is not allowed at this point.
+       **/
+      CallNotAllowed: AugmentedError<ApiType>;
       /**
        * OCW submitted solution for wrong round
        **/
@@ -1182,6 +1186,10 @@ declare module '@polkadot/api/types/errors' {
        * A nomination target was supplied that was blocked or otherwise not a validator.
        **/
       BadTarget: AugmentedError<ApiType>;
+      /**
+       * The user has enough bond and thus cannot be chilled forcefully by an external person.
+       **/
+      CannotChillOther: AugmentedError<ApiType>;
       /**
        * Duplicate index.
        **/
@@ -1203,9 +1211,9 @@ declare module '@polkadot/api/types/errors' {
        **/
       IncorrectSlashingSpans: AugmentedError<ApiType>;
       /**
-       * Can not bond with value less than minimum balance.
+       * Can not bond with value less than minimum required.
        **/
-      InsufficientValue: AugmentedError<ApiType>;
+      InsufficientBond: AugmentedError<ApiType>;
       /**
        * Invalid era to reward.
        **/
@@ -1238,10 +1246,20 @@ declare module '@polkadot/api/types/errors' {
        * Can not rebond without unlocking chunks.
        **/
       NoUnlockChunk: AugmentedError<ApiType>;
+      /**
+       * There are too many nominators in the system. Governance needs to adjust the staking settings
+       * to keep things safe for the runtime.
+       **/
+      TooManyNominators: AugmentedError<ApiType>;
       /**
        * Too many nomination targets supplied.
        **/
       TooManyTargets: AugmentedError<ApiType>;
+      /**
+       * There are too many validators in the system. Governance needs to adjust the staking settings
+       * to keep things safe for the runtime.
+       **/
+      TooManyValidators: AugmentedError<ApiType>;
       /**
        * Generic error
        **/
diff --git a/packages/api/src/augment/events.ts b/packages/api/src/augment/events.ts
index ea6975cedb..19f84c56f4 100644
--- a/packages/api/src/augment/events.ts
+++ b/packages/api/src/augment/events.ts
@@ -835,6 +835,10 @@ declare module '@polkadot/api/types/events' {
        * A new set of stakers was elected.
        **/
       StakingElection: AugmentedEvent<ApiType, []>;
+      /**
+       * The election failed. No new era is planned.
+       **/
+      StakingElectionFailed: AugmentedEvent<ApiType, []>;
       /**
        * An account has unbonded this amount. \[stash, amount\]
        **/
diff --git a/packages/api/src/augment/query.ts b/packages/api/src/augment/query.ts
index eb1fec2b3c..293df816d0 100644
--- a/packages/api/src/augment/query.ts
+++ b/packages/api/src/augment/query.ts
@@ -883,6 +883,14 @@ declare module '@polkadot/api/types/storage' {
        * canceled by extraordinary circumstances (e.g. governance).
        **/
       canceledSlashPayout: AugmentedQuery<ApiType, () => Observable<BalanceOf>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * A tracker to keep count of the number of items in the `Nominators` map.
+       **/
+      counterForNominators: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * A tracker to keep count of the number of items in the `Validators` map.
+       **/
+      counterForValidators: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
       /**
        * The current era index.
        * 
@@ -978,12 +986,34 @@ declare module '@polkadot/api/types/storage' {
        * Map from all (unlocked) "controller" accounts to the info regarding the staking.
        **/
       ledger: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<StakingLedger>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
+      /**
+       * The maximum nominator count before we stop allowing new validators to join.
+       * 
+       * When this value is not set, no limits are enforced.
+       **/
+      maxNominatorsCount: AugmentedQuery<ApiType, () => Observable<Option<u32>>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The maximum validator count before we stop allowing new validators to join.
+       * 
+       * When this value is not set, no limits are enforced.
+       **/
+      maxValidatorsCount: AugmentedQuery<ApiType, () => Observable<Option<u32>>, []> & QueryableStorageEntry<ApiType, []>;
       /**
        * Minimum number of staking participants before emergency conditions are imposed.
        **/
       minimumValidatorCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The minimum active bond to become and maintain the role of a nominator.
+       **/
+      minNominatorBond: AugmentedQuery<ApiType, () => Observable<BalanceOf>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * The minimum active bond to become and maintain the role of a validator.
+       **/
+      minValidatorBond: AugmentedQuery<ApiType, () => Observable<BalanceOf>, []> & QueryableStorageEntry<ApiType, []>;
       /**
        * The map from nominator stash key to the set of stash keys of all validators to nominate.
+       * 
+       * When updating this storage item, you must also update the `CounterForNominators`.
        **/
       nominators: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<Option<Nominations>>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
       /**
@@ -1026,6 +1056,8 @@ declare module '@polkadot/api/types/storage' {
       validatorCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
       /**
        * The map from (wannabe) validator stash key to the preferences of that validator.
+       * 
+       * When updating this storage item, you must also update the `CounterForValidators`.
        **/
       validators: AugmentedQuery<ApiType, (arg: AccountId | string | Uint8Array) => Observable<ValidatorPrefs>, [AccountId]> & QueryableStorageEntry<ApiType, [AccountId]>;
       /**
diff --git a/packages/api/src/augment/tx.ts b/packages/api/src/augment/tx.ts
index a7cc85b465..358f1ae940 100644
--- a/packages/api/src/augment/tx.ts
+++ b/packages/api/src/augment/tx.ts
@@ -19,7 +19,7 @@ import type { AccountId, AccountIndex, AssetId, Balance, BalanceOf, BlockNumber,
 import type { Period, Priority } from '@polkadot/types/interfaces/scheduler';
 import type { Keys } from '@polkadot/types/interfaces/session';
 import type { SocietyJudgement } from '@polkadot/types/interfaces/society';
-import type { ElectionScore, EraIndex, RawSolution, RewardDestination, SolutionOrSnapshotSize, ValidatorPrefs } from '@polkadot/types/interfaces/staking';
+import type { ElectionScore, EraIndex, RawSolution, ReadySolution, RewardDestination, SolutionOrSnapshotSize, ValidatorPrefs } from '@polkadot/types/interfaces/staking';
 import type { Key } from '@polkadot/types/interfaces/system';
 import type { BountyIndex } from '@polkadot/types/interfaces/treasury';
 import type { ClassId, DestroyWitness, InstanceId } from '@polkadot/types/interfaces/uniques';
@@ -1246,6 +1246,17 @@ declare module '@polkadot/api/types/submittable' {
       [key: string]: SubmittableExtrinsicFunction<ApiType>;
     };
     electionProviderMultiPhase: {
+      /**
+       * Set a solution in the queue, to be handed out to the client of this pallet in the next
+       * call to `ElectionProvider::elect`.
+       * 
+       * This can only be set by `T::ForceOrigin`, and only when the phase is `Emergency`.
+       * 
+       * The solution is not checked for any feasibility and is assumed to be trustworthy, as any
+       * feasibility check itself can in principle cause the election process to fail (due to
+       * memory/weight constrains).
+       **/
+      setEmergencyElectionResult: AugmentedSubmittable<(solution: ReadySolution | { supports?: any; score?: any; compute?: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [ReadySolution]>;
       /**
        * Set a new value for `MinimumUntrustedScore`.
        * 
@@ -2550,7 +2561,7 @@ declare module '@polkadot/api/types/submittable' {
        * Actual cost depends on the number of length of `T::Keys::key_ids()` which is fixed.
        * - DbReads: `T::ValidatorIdOf`, `NextKeys`, `origin account`
        * - DbWrites: `NextKeys`, `origin account`
-       * - DbWrites per key id: `KeyOwnder`
+       * - DbWrites per key id: `KeyOwner`
        * # </weight>
        **/
       purgeKeys: AugmentedSubmittable<() => SubmittableExtrinsic<ApiType>, []>;
@@ -2985,12 +2996,34 @@ declare module '@polkadot/api/types/submittable' {
        * # </weight>
        **/
       chill: AugmentedSubmittable<() => SubmittableExtrinsic<ApiType>, []>;
+      /**
+       * Declare a `controller` as having no desire to either validator or nominate.
+       * 
+       * Effects will be felt at the beginning of the next era.
+       * 
+       * The dispatch origin for this call must be _Signed_, but can be called by anyone.
+       * 
+       * If the caller is the same as the controller being targeted, then no further checks
+       * are enforced. However, this call can also be made by an third party user who witnesses
+       * that this controller does not satisfy the minimum bond requirements to be in their role.
+       * 
+       * This can be helpful if bond requirements are updated, and we need to remove old users
+       * who do not satisfy these requirements.
+       * 
+       **/
+      chillOther: AugmentedSubmittable<(controller: AccountId | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [AccountId]>;
       /**
        * Force there to be a new era at the end of the next session. After this, it will be
        * reset to normal (non-forced) behaviour.
        * 
        * The dispatch origin must be Root.
        * 
+       * # Warning
+       * 
+       * The election process starts multiple blocks before the end of the era.
+       * If this is called just before a new era is triggered, the election process may not
+       * have enough blocks to get a result.
+       * 
        * # <weight>
        * - No arguments.
        * - Weight: O(1)
@@ -3003,6 +3036,12 @@ declare module '@polkadot/api/types/submittable' {
        * 
        * The dispatch origin must be Root.
        * 
+       * # Warning
+       * 
+       * The election process starts multiple blocks before the end of the era.
+       * If this is called just before a new era is triggered, the election process may not
+       * have enough blocks to get a result.
+       * 
        * # <weight>
        * - Weight: O(1)
        * - Write: ForceEra
@@ -3014,6 +3053,12 @@ declare module '@polkadot/api/types/submittable' {
        * 
        * The dispatch origin must be Root.
        * 
+       * # Warning
+       * 
+       * The election process starts multiple blocks before the end of the era.
+       * Thus the election process may be ongoing when this is called. In this case the
+       * election will continue until the next era is triggered.
+       * 
        * # <weight>
        * - No arguments.
        * - Weight: O(1)
@@ -3254,6 +3299,9 @@ declare module '@polkadot/api/types/submittable' {
        * can co-exists at the same time. In that case, [`Call::withdraw_unbonded`] need
        * to be called first to remove some of the chunks (if possible).
        * 
+       * If a user encounters the `InsufficientBond` error when calling this extrinsic,
+       * they should call `chill` first in order to free up their bonded funds.
+       * 
        * The dispatch origin for this call must be _Signed_ by the controller, not the stash.
        * And, it can be only called when [`EraElectionStatus`] is `Closed`.
        * 
@@ -3277,6 +3325,22 @@ declare module '@polkadot/api/types/submittable' {
        * </weight>
        **/
       unbond: AugmentedSubmittable<(value: Compact<BalanceOf> | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [Compact<BalanceOf>]>;
+      /**
+       * Update the various staking limits this pallet.
+       * 
+       * * `min_nominator_bond`: The minimum active bond needed to be a nominator.
+       * * `min_validator_bond`: The minimum active bond needed to be a validator.
+       * * `max_nominator_count`: The max number of users who can be a nominator at once.
+       * When set to `None`, no limit is enforced.
+       * * `max_validator_count`: The max number of users who can be a validator at once.
+       * When set to `None`, no limit is enforced.
+       * 
+       * Origin must be Root to call this function.
+       * 
+       * NOTE: Existing nominators and validators will not be affected by this update.
+       * to kick people under the new limits, `chill_other` should be called.
+       **/
+      updateStakingLimits: AugmentedSubmittable<(minNominatorBond: BalanceOf | AnyNumber | Uint8Array, minValidatorBond: BalanceOf | AnyNumber | Uint8Array, maxNominatorCount: Option<u32> | null | object | string | Uint8Array, maxValidatorCount: Option<u32> | null | object | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [BalanceOf, BalanceOf, Option<u32>, Option<u32>]>;
       /**
        * Declare the desire to validate for the origin controller.
        * 
diff --git a/packages/api/src/packageInfo.ts b/packages/api/src/packageInfo.ts
index de23f1f9b9..5c685bdb4b 100644
--- a/packages/api/src/packageInfo.ts
+++ b/packages/api/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/api', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/api', version: '4.15.2-0' };
diff --git a/packages/metadata/package.json b/packages/metadata/package.json
index 51dabb13ee..540a715993 100644
--- a/packages/metadata/package.json
+++ b/packages/metadata/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/metadata",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Helpers to extract information from runtime metadata",
   "main": "index.js",
@@ -20,8 +20,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/type-metadata#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/types": "4.15.1",
-    "@polkadot/types-known": "4.15.1",
+    "@polkadot/types": "4.15.2-0",
+    "@polkadot/types-known": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/util-crypto": "^6.9.1"
   },
diff --git a/packages/metadata/src/packageInfo.ts b/packages/metadata/src/packageInfo.ts
index 4aa5abb865..9270f3e83b 100644
--- a/packages/metadata/src/packageInfo.ts
+++ b/packages/metadata/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/metadata', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/metadata', version: '4.15.2-0' };
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index fcbc4c5f63..cf6a5dc505 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
@@ -20,9 +20,9 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/metadata": "4.15.1",
-    "@polkadot/rpc-provider": "4.15.1",
-    "@polkadot/types": "4.15.1",
+    "@polkadot/metadata": "4.15.2-0",
+    "@polkadot/rpc-provider": "4.15.2-0",
+    "@polkadot/types": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/x-rxjs": "^6.9.1"
   },
diff --git a/packages/rpc-core/src/packageInfo.ts b/packages/rpc-core/src/packageInfo.ts
index 80ef9c7e9b..36537c9354 100644
--- a/packages/rpc-core/src/packageInfo.ts
+++ b/packages/rpc-core/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/rpc-core', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/rpc-core', version: '4.15.2-0' };
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 0dbb23fc3b..beeae16b07 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Transport providers for the API",
   "main": "index.js",
@@ -20,7 +20,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-provider#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/types": "4.15.1",
+    "@polkadot/types": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/util-crypto": "^6.9.1",
     "@polkadot/x-fetch": "^6.9.1",
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@polkadot/keyring": "^6.9.1",
-    "@polkadot/metadata": "4.15.1",
+    "@polkadot/metadata": "4.15.2-0",
     "mock-socket": "^9.0.3",
     "nock": "^13.1.0"
   }
diff --git a/packages/rpc-provider/src/packageInfo.ts b/packages/rpc-provider/src/packageInfo.ts
index 4690f673a3..ae38d6c149 100644
--- a/packages/rpc-provider/src/packageInfo.ts
+++ b/packages/rpc-provider/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/rpc-provider', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/rpc-provider', version: '4.15.2-0' };
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index d23151ff0a..02d85f65a1 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/typegen",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Type generation scripts",
   "main": "index.js",
@@ -29,10 +29,10 @@
     "@babel/core": "^7.14.5",
     "@babel/register": "^7.14.5",
     "@babel/runtime": "^7.14.5",
-    "@polkadot/api": "4.15.1",
-    "@polkadot/metadata": "4.15.1",
-    "@polkadot/rpc-provider": "4.15.1",
-    "@polkadot/types": "4.15.1",
+    "@polkadot/api": "4.15.2-0",
+    "@polkadot/metadata": "4.15.2-0",
+    "@polkadot/rpc-provider": "4.15.2-0",
+    "@polkadot/types": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "handlebars": "^4.7.7",
     "websocket": "^1.0.34",
diff --git a/packages/typegen/src/packageInfo.ts b/packages/typegen/src/packageInfo.ts
index f97e5c2c92..7fb1ff7c28 100644
--- a/packages/typegen/src/packageInfo.ts
+++ b/packages/typegen/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/typegen', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/typegen', version: '4.15.2-0' };
diff --git a/packages/types-known/package.json b/packages/types-known/package.json
index 2979ab1fb3..93dce494f1 100644
--- a/packages/types-known/package.json
+++ b/packages/types-known/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types-known",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
@@ -21,7 +21,7 @@
   "dependencies": {
     "@babel/runtime": "^7.14.5",
     "@polkadot/networks": "^6.9.1",
-    "@polkadot/types": "4.15.1",
+    "@polkadot/types": "4.15.2-0",
     "@polkadot/util": "^6.9.1"
   }
 }
diff --git a/packages/types-known/src/packageInfo.ts b/packages/types-known/src/packageInfo.ts
index 544e17df87..89715efdd7 100644
--- a/packages/types-known/src/packageInfo.ts
+++ b/packages/types-known/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/types-known', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/types-known', version: '4.15.2-0' };
diff --git a/packages/types/package.json b/packages/types/package.json
index 552bfbe91b..1b19b253e8 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "4.15.1",
+  "version": "4.15.2-0",
   "type": "module",
   "description": "Implementation of the Parity codec",
   "main": "index.js",
@@ -20,7 +20,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/types#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.5",
-    "@polkadot/metadata": "4.15.1",
+    "@polkadot/metadata": "4.15.2-0",
     "@polkadot/util": "^6.9.1",
     "@polkadot/util-crypto": "^6.9.1",
     "@polkadot/x-rxjs": "^6.9.1"
diff --git a/packages/types/src/packageInfo.ts b/packages/types/src/packageInfo.ts
index 8dd9761a67..6f60082e40 100644
--- a/packages/types/src/packageInfo.ts
+++ b/packages/types/src/packageInfo.ts
@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/types', version: '4.15.1' };
+export const packageInfo = { name: '@polkadot/types', version: '4.15.2-0' };
diff --git a/yarn.lock b/yarn.lock
index 6e0f95e76f..403a751778 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1849,41 +1849,41 @@ __metadata:
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
     "@babel/runtime": ^7.14.5
-    "@polkadot/api": 4.15.1
-    "@polkadot/types": 4.15.1
+    "@polkadot/api": 4.15.2-0
+    "@polkadot/types": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/x-rxjs": ^6.9.1
   languageName: unknown
   linkType: soft
 
-"@polkadot/api-derive@4.15.1, @polkadot/api-derive@workspace:packages/api-derive":
+"@polkadot/api-derive@4.15.2-0, @polkadot/api-derive@workspace:packages/api-derive":
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
     "@babel/runtime": ^7.14.5
-    "@polkadot/api": 4.15.1
+    "@polkadot/api": 4.15.2-0
     "@polkadot/keyring": ^6.9.1
-    "@polkadot/rpc-core": 4.15.1
-    "@polkadot/rpc-provider": 4.15.1
-    "@polkadot/types": 4.15.1
+    "@polkadot/rpc-core": 4.15.2-0
+    "@polkadot/rpc-provider": 4.15.2-0
+    "@polkadot/types": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/util-crypto": ^6.9.1
     "@polkadot/x-rxjs": ^6.9.1
   languageName: unknown
   linkType: soft
 
-"@polkadot/api@4.15.1, @polkadot/api@workspace:packages/api":
+"@polkadot/api@4.15.2-0, @polkadot/api@workspace:packages/api":
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
     "@babel/runtime": ^7.14.5
-    "@polkadot/api-derive": 4.15.1
+    "@polkadot/api-derive": 4.15.2-0
     "@polkadot/keyring": ^6.9.1
-    "@polkadot/metadata": 4.15.1
-    "@polkadot/rpc-core": 4.15.1
-    "@polkadot/rpc-provider": 4.15.1
-    "@polkadot/types": 4.15.1
-    "@polkadot/types-known": 4.15.1
+    "@polkadot/metadata": 4.15.2-0
+    "@polkadot/rpc-core": 4.15.2-0
+    "@polkadot/rpc-provider": 4.15.2-0
+    "@polkadot/types": 4.15.2-0
+    "@polkadot/types-known": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/util-crypto": ^6.9.1
     "@polkadot/x-rxjs": ^6.9.1
@@ -1991,14 +1991,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/metadata@4.15.1, @polkadot/metadata@workspace:packages/metadata":
+"@polkadot/metadata@4.15.2-0, @polkadot/metadata@workspace:packages/metadata":
   version: 0.0.0-use.local
   resolution: "@polkadot/metadata@workspace:packages/metadata"
   dependencies:
     "@babel/runtime": ^7.14.5
     "@polkadot/keyring": ^6.9.1
-    "@polkadot/types": 4.15.1
-    "@polkadot/types-known": 4.15.1
+    "@polkadot/types": 4.15.2-0
+    "@polkadot/types-known": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/util-crypto": ^6.9.1
   languageName: unknown
@@ -2013,28 +2013,28 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/rpc-core@4.15.1, @polkadot/rpc-core@workspace:packages/rpc-core":
+"@polkadot/rpc-core@4.15.2-0, @polkadot/rpc-core@workspace:packages/rpc-core":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.14.5
     "@polkadot/keyring": ^6.9.1
-    "@polkadot/metadata": 4.15.1
-    "@polkadot/rpc-provider": 4.15.1
-    "@polkadot/types": 4.15.1
+    "@polkadot/metadata": 4.15.2-0
+    "@polkadot/rpc-provider": 4.15.2-0
+    "@polkadot/types": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/x-rxjs": ^6.9.1
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-provider@4.15.1, @polkadot/rpc-provider@workspace:packages/rpc-provider":
+"@polkadot/rpc-provider@4.15.2-0, @polkadot/rpc-provider@workspace:packages/rpc-provider":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.14.5
     "@polkadot/keyring": ^6.9.1
-    "@polkadot/metadata": 4.15.1
-    "@polkadot/types": 4.15.1
+    "@polkadot/metadata": 4.15.2-0
+    "@polkadot/types": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/util-crypto": ^6.9.1
     "@polkadot/x-fetch": ^6.9.1
@@ -2062,10 +2062,10 @@ __metadata:
     "@babel/core": ^7.14.5
     "@babel/register": ^7.14.5
     "@babel/runtime": ^7.14.5
-    "@polkadot/api": 4.15.1
-    "@polkadot/metadata": 4.15.1
-    "@polkadot/rpc-provider": 4.15.1
-    "@polkadot/types": 4.15.1
+    "@polkadot/api": 4.15.2-0
+    "@polkadot/metadata": 4.15.2-0
+    "@polkadot/rpc-provider": 4.15.2-0
+    "@polkadot/types": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@types/websocket": ^1.0.2
     "@types/yargs": ^17.0.0
@@ -2081,24 +2081,24 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-known@4.15.1, @polkadot/types-known@workspace:packages/types-known":
+"@polkadot/types-known@4.15.2-0, @polkadot/types-known@workspace:packages/types-known":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-known@workspace:packages/types-known"
   dependencies:
     "@babel/runtime": ^7.14.5
     "@polkadot/networks": ^6.9.1
-    "@polkadot/types": 4.15.1
+    "@polkadot/types": 4.15.2-0
     "@polkadot/util": ^6.9.1
   languageName: unknown
   linkType: soft
 
-"@polkadot/types@4.15.1, @polkadot/types@workspace:packages/types":
+"@polkadot/types@4.15.2-0, @polkadot/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.14.5
     "@polkadot/keyring": ^6.9.1
-    "@polkadot/metadata": 4.15.1
+    "@polkadot/metadata": 4.15.2-0
     "@polkadot/util": ^6.9.1
     "@polkadot/util-crypto": ^6.9.1
     "@polkadot/x-rxjs": ^6.9.1