diff --git a/CHANGELOG.md b/CHANGELOG.md
index e26dc58ddbcf..335e69991468 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,12 @@
 # CHANGELOG
 
-## master
+## 5.5.2 Aug 19, 2021
+
+Upgrade priority: Medium. Contains fixes for parachain types, affecting historic block retrieval on Kusama.
 
 Changes:
 
+- Adjust `ValidDisputeStatementKind` enum to latest version
 - Only enable API health keepalive on connections supporting subscriptions
 
 
diff --git a/package.json b/package.json
index 35108013933e..a4b13bfd81d9 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,6 @@
     "@types/jest": "^26.0.24",
     "copyfiles": "^2.4.1"
   },
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "packageManager": "yarn@3.0.1"
 }
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index 1111a1e852bf..6dc8a8275476 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-contract",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "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": "^7.15.3",
-    "@polkadot/api": "5.5.2-1",
-    "@polkadot/types": "5.5.2-1",
+    "@polkadot/api": "5.5.2",
+    "@polkadot/types": "5.5.2",
     "@polkadot/util": "^7.2.1",
     "rxjs": "^7.3.0"
   }
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index cef8ddfe88b0..e3280da1116f 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "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": "^7.15.3",
-    "@polkadot/api": "5.5.2-1",
-    "@polkadot/rpc-core": "5.5.2-1",
-    "@polkadot/types": "5.5.2-1",
+    "@polkadot/api": "5.5.2",
+    "@polkadot/rpc-core": "5.5.2",
+    "@polkadot/types": "5.5.2",
     "@polkadot/util": "^7.2.1",
     "@polkadot/util-crypto": "^7.2.1",
     "rxjs": "^7.3.0"
   },
   "devDependencies": {
     "@polkadot/keyring": "^7.2.1",
-    "@polkadot/rpc-provider": "5.5.2-1"
+    "@polkadot/rpc-provider": "5.5.2"
   }
 }
diff --git a/packages/api/package.json b/packages/api/package.json
index 09b3bb62532a..b78855acbaba 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "type": "module",
   "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
   "main": "index.js",
@@ -20,12 +20,12 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
     "@babel/runtime": "^7.15.3",
-    "@polkadot/api-derive": "5.5.2-1",
+    "@polkadot/api-derive": "5.5.2",
     "@polkadot/keyring": "^7.2.1",
-    "@polkadot/rpc-core": "5.5.2-1",
-    "@polkadot/rpc-provider": "5.5.2-1",
-    "@polkadot/types": "5.5.2-1",
-    "@polkadot/types-known": "5.5.2-1",
+    "@polkadot/rpc-core": "5.5.2",
+    "@polkadot/rpc-provider": "5.5.2",
+    "@polkadot/types": "5.5.2",
+    "@polkadot/types-known": "5.5.2",
     "@polkadot/util": "^7.2.1",
     "@polkadot/util-crypto": "^7.2.1",
     "eventemitter3": "^4.0.7",
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index e6158bd8d36a..cfb049df7474 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "type": "module",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
@@ -20,8 +20,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
     "@babel/runtime": "^7.15.3",
-    "@polkadot/rpc-provider": "5.5.2-1",
-    "@polkadot/types": "5.5.2-1",
+    "@polkadot/rpc-provider": "5.5.2",
+    "@polkadot/types": "5.5.2",
     "@polkadot/util": "^7.2.1",
     "rxjs": "^7.3.0"
   },
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 4dc45268f6df..d15e28d51ad0 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "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": "^7.15.3",
-    "@polkadot/types": "5.5.2-1",
+    "@polkadot/types": "5.5.2",
     "@polkadot/util": "^7.2.1",
     "@polkadot/util-crypto": "^7.2.1",
     "@polkadot/x-fetch": "^7.2.1",
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@polkadot/keyring": "^7.2.1",
-    "@polkadot/types": "5.5.2-1",
+    "@polkadot/types": "5.5.2",
     "mock-socket": "^9.0.3",
     "nock": "^13.1.1"
   }
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index 1210c78f2ad9..c503f6de1f16 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/typegen",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "type": "module",
   "description": "Type generation scripts",
   "main": "index.js",
@@ -29,10 +29,10 @@
     "@babel/core": "^7.15.0",
     "@babel/register": "^7.15.3",
     "@babel/runtime": "^7.15.3",
-    "@polkadot/api": "5.5.2-1",
-    "@polkadot/rpc-provider": "5.5.2-1",
-    "@polkadot/types": "5.5.2-1",
-    "@polkadot/types-support": "5.5.2-1",
+    "@polkadot/api": "5.5.2",
+    "@polkadot/rpc-provider": "5.5.2",
+    "@polkadot/types": "5.5.2",
+    "@polkadot/types-support": "5.5.2",
     "@polkadot/util": "^7.2.1",
     "handlebars": "^4.7.7",
     "websocket": "^1.0.34",
diff --git a/packages/types-known/package.json b/packages/types-known/package.json
index a531044bd9e9..f6b2d9dad5b1 100644
--- a/packages/types-known/package.json
+++ b/packages/types-known/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types-known",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "type": "module",
   "description": "Known type definitions",
   "main": "index.js",
@@ -21,7 +21,7 @@
   "dependencies": {
     "@babel/runtime": "^7.15.3",
     "@polkadot/networks": "^7.2.1",
-    "@polkadot/types": "5.5.2-1",
+    "@polkadot/types": "5.5.2",
     "@polkadot/util": "^7.2.1"
   }
 }
diff --git a/packages/types-support/package.json b/packages/types-support/package.json
index cf973643ff20..3faf50872712 100644
--- a/packages/types-support/package.json
+++ b/packages/types-support/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types-support",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "type": "module",
   "description": "Supporting files for types, mostly for testing",
   "main": "index.js",
diff --git a/packages/types/package.json b/packages/types/package.json
index d26e895f69bd..2590fc04b77a 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "5.5.2-1",
+  "version": "5.5.2",
   "type": "module",
   "description": "Implementation of the Parity codec",
   "main": "index.js",
@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "@polkadot/keyring": "^7.2.1",
-    "@polkadot/types-support": "5.5.2-1",
+    "@polkadot/types-support": "5.5.2",
     "@types/bn.js": "^4.11.6",
     "bn.js": "^4.11.9"
   }
diff --git a/packages/types/src/interfaces/parachains/definitions.ts b/packages/types/src/interfaces/parachains/definitions.ts
index 696ace35f6f0..95684cc80145 100644
--- a/packages/types/src/interfaces/parachains/definitions.ts
+++ b/packages/types/src/interfaces/parachains/definitions.ts
@@ -159,7 +159,7 @@ export default {
     DisputeStatementSet: {
       candidateHash: 'CandidateHash',
       session: 'SessionIndex',
-      statements: 'Vec<(DisputeStatement, ValidatorIndex, ValidatorSignature)>'
+      statements: 'Vec<(DisputeStatement, ParaValidatorIndex, ValidatorSignature)>'
     },
     MultiDisputeStatementSet: 'Vec<DisputeStatementSet>',
     DisputeStatement: {
@@ -169,12 +169,12 @@ export default {
       }
     },
     ValidDisputeStatementKind: {
-      _enum: [
-        'Explicit',
-        'BackingSeconded',
-        'BackingValid',
-        'ApprovalChecking'
-      ]
+      _enum: {
+        Explicit: 'Null',
+        BackingSeconded: 'Hash',
+        BackingValid: 'Hash',
+        ApprovalChecking: 'Null'
+      }
     },
     InvalidDisputeStatementKind: {
       _enum: [
diff --git a/packages/types/src/interfaces/parachains/types.ts b/packages/types/src/interfaces/parachains/types.ts
index 3e29b8fed11e..a108054a2b4a 100644
--- a/packages/types/src/interfaces/parachains/types.ts
+++ b/packages/types/src/interfaces/parachains/types.ts
@@ -6,7 +6,6 @@ import type { ITuple } from '@polkadot/types/types';
 import type { Signature } from '@polkadot/types/interfaces/extrinsics';
 import type { AccountId, Balance, BalanceOf, BlockNumber, H256, Hash, Header, StorageProof, ValidatorId, Weight } from '@polkadot/types/interfaces/runtime';
 import type { MembershipProof, SessionIndex } from '@polkadot/types/interfaces/session';
-import type { ValidatorIndex } from '@polkadot/types/interfaces/staking';
 
 /** @name AbridgedCandidateReceipt */
 export interface AbridgedCandidateReceipt extends Struct {
@@ -189,7 +188,7 @@ export interface DisputeStatement extends Enum {
 export interface DisputeStatementSet extends Struct {
   readonly candidateHash: CandidateHash;
   readonly session: SessionIndex;
-  readonly statements: Vec<ITuple<[DisputeStatement, ValidatorIndex, ValidatorSignature]>>;
+  readonly statements: Vec<ITuple<[DisputeStatement, ParaValidatorIndex, ValidatorSignature]>>;
 }
 
 /** @name DoubleVoteReport */
@@ -661,7 +660,9 @@ export interface ValidatorSignature extends Signature {}
 export interface ValidDisputeStatementKind extends Enum {
   readonly isExplicit: boolean;
   readonly isBackingSeconded: boolean;
+  readonly asBackingSeconded: Hash;
   readonly isBackingValid: boolean;
+  readonly asBackingValid: Hash;
   readonly isApprovalChecking: boolean;
 }
 
diff --git a/yarn.lock b/yarn.lock
index 6e12c0b284c0..0109387dfda9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1867,40 +1867,40 @@ __metadata:
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
     "@babel/runtime": ^7.15.3
-    "@polkadot/api": 5.5.2-1
-    "@polkadot/types": 5.5.2-1
+    "@polkadot/api": 5.5.2
+    "@polkadot/types": 5.5.2
     "@polkadot/util": ^7.2.1
     rxjs: ^7.3.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/api-derive@5.5.2-1, @polkadot/api-derive@workspace:packages/api-derive":
+"@polkadot/api-derive@5.5.2, @polkadot/api-derive@workspace:packages/api-derive":
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
     "@babel/runtime": ^7.15.3
-    "@polkadot/api": 5.5.2-1
+    "@polkadot/api": 5.5.2
     "@polkadot/keyring": ^7.2.1
-    "@polkadot/rpc-core": 5.5.2-1
-    "@polkadot/rpc-provider": 5.5.2-1
-    "@polkadot/types": 5.5.2-1
+    "@polkadot/rpc-core": 5.5.2
+    "@polkadot/rpc-provider": 5.5.2
+    "@polkadot/types": 5.5.2
     "@polkadot/util": ^7.2.1
     "@polkadot/util-crypto": ^7.2.1
     rxjs: ^7.3.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/api@5.5.2-1, @polkadot/api@workspace:packages/api":
+"@polkadot/api@5.5.2, @polkadot/api@workspace:packages/api":
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
     "@babel/runtime": ^7.15.3
-    "@polkadot/api-derive": 5.5.2-1
+    "@polkadot/api-derive": 5.5.2
     "@polkadot/keyring": ^7.2.1
-    "@polkadot/rpc-core": 5.5.2-1
-    "@polkadot/rpc-provider": 5.5.2-1
-    "@polkadot/types": 5.5.2-1
-    "@polkadot/types-known": 5.5.2-1
+    "@polkadot/rpc-core": 5.5.2
+    "@polkadot/rpc-provider": 5.5.2
+    "@polkadot/types": 5.5.2
+    "@polkadot/types-known": 5.5.2
     "@polkadot/util": ^7.2.1
     "@polkadot/util-crypto": ^7.2.1
     eventemitter3: ^4.0.7
@@ -2025,26 +2025,26 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/rpc-core@5.5.2-1, @polkadot/rpc-core@workspace:packages/rpc-core":
+"@polkadot/rpc-core@5.5.2, @polkadot/rpc-core@workspace:packages/rpc-core":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.15.3
     "@polkadot/keyring": ^7.2.1
-    "@polkadot/rpc-provider": 5.5.2-1
-    "@polkadot/types": 5.5.2-1
+    "@polkadot/rpc-provider": 5.5.2
+    "@polkadot/types": 5.5.2
     "@polkadot/util": ^7.2.1
     rxjs: ^7.3.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-provider@5.5.2-1, @polkadot/rpc-provider@workspace:packages/rpc-provider":
+"@polkadot/rpc-provider@5.5.2, @polkadot/rpc-provider@workspace:packages/rpc-provider":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.15.3
     "@polkadot/keyring": ^7.2.1
-    "@polkadot/types": 5.5.2-1
+    "@polkadot/types": 5.5.2
     "@polkadot/util": ^7.2.1
     "@polkadot/util-crypto": ^7.2.1
     "@polkadot/x-fetch": ^7.2.1
@@ -2072,10 +2072,10 @@ __metadata:
     "@babel/core": ^7.15.0
     "@babel/register": ^7.15.3
     "@babel/runtime": ^7.15.3
-    "@polkadot/api": 5.5.2-1
-    "@polkadot/rpc-provider": 5.5.2-1
-    "@polkadot/types": 5.5.2-1
-    "@polkadot/types-support": 5.5.2-1
+    "@polkadot/api": 5.5.2
+    "@polkadot/rpc-provider": 5.5.2
+    "@polkadot/types": 5.5.2
+    "@polkadot/types-support": 5.5.2
     "@polkadot/util": ^7.2.1
     "@types/websocket": ^1.0.4
     "@types/yargs": ^17.0.2
@@ -2091,18 +2091,18 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-known@5.5.2-1, @polkadot/types-known@workspace:packages/types-known":
+"@polkadot/types-known@5.5.2, @polkadot/types-known@workspace:packages/types-known":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-known@workspace:packages/types-known"
   dependencies:
     "@babel/runtime": ^7.15.3
     "@polkadot/networks": ^7.2.1
-    "@polkadot/types": 5.5.2-1
+    "@polkadot/types": 5.5.2
     "@polkadot/util": ^7.2.1
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-support@5.5.2-1, @polkadot/types-support@workspace:packages/types-support":
+"@polkadot/types-support@5.5.2, @polkadot/types-support@workspace:packages/types-support":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-support@workspace:packages/types-support"
   dependencies:
@@ -2111,13 +2111,13 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types@5.5.2-1, @polkadot/types@workspace:packages/types":
+"@polkadot/types@5.5.2, @polkadot/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.15.3
     "@polkadot/keyring": ^7.2.1
-    "@polkadot/types-support": 5.5.2-1
+    "@polkadot/types-support": 5.5.2
     "@polkadot/util": ^7.2.1
     "@polkadot/util-crypto": ^7.2.1
     "@types/bn.js": ^4.11.6