diff --git a/packages/types-known/src/index.ts b/packages/types-known/src/index.ts
index 41675d0a9c..d244be35ee 100644
--- a/packages/types-known/src/index.ts
+++ b/packages/types-known/src/index.ts
@@ -15,11 +15,11 @@ import typesSpec from './spec';
 
 // flatten a VersionedType[] into a Record<string, string>
 /** @internal */
-function filterVersions (versions: OverrideVersionedType[] = [], version: number): RegistryTypes {
+function filterVersions (versions: OverrideVersionedType[] = [], specVersion: number): RegistryTypes {
   return versions
-    .filter(({ minmax: [min, max] }): boolean =>
-      (isUndefined(min) || version >= min) &&
-      (isUndefined(max) || version <= max)
+    .filter(({ minmax: [min, max] }) =>
+      (isUndefined(min) || specVersion >= min) &&
+      (isUndefined(max) || specVersion <= max)
     )
     .reduce((result: RegistryTypes, { types }): RegistryTypes => ({
       ...result,
@@ -30,8 +30,8 @@ function filterVersions (versions: OverrideVersionedType[] = [], version: number
 /**
  * @description Based on the metadata version, return the registry types
  */
-export function getMetadataTypes (_registry: Registry, version: number): RegistryTypes {
-  return filterVersions(typesMeta, version);
+export function getMetadataTypes (_registry: Registry, specVersion: number): RegistryTypes {
+  return filterVersions(typesMeta, specVersion);
 }
 
 /**
diff --git a/packages/types-known/src/spec/kusama.ts b/packages/types-known/src/spec/kusama.ts
index 2a6c20f1e6..4018ce8ff3 100644
--- a/packages/types-known/src/spec/kusama.ts
+++ b/packages/types-known/src/spec/kusama.ts
@@ -59,13 +59,21 @@ const versioned: OverrideVersionedType[] = [
     }
   },
   {
-    minmax: [1055, undefined],
+    minmax: [1055, 1056],
     types: {
       Address: 'AccountId',
       Keys: 'SessionKeys5',
       LookupSource: 'AccountId',
       StakingLedger: 'StakingLedgerTo240'
     }
+  },
+  {
+    minmax: [1057, undefined],
+    types: {
+      Address: 'AccountId',
+      Keys: 'SessionKeys5',
+      LookupSource: 'AccountId'
+    }
   }
 ];
 
diff --git a/packages/types-known/src/spec/polkadot.ts b/packages/types-known/src/spec/polkadot.ts
index 175ab90765..965a9a9475 100644
--- a/packages/types-known/src/spec/polkadot.ts
+++ b/packages/types-known/src/spec/polkadot.ts
@@ -32,13 +32,21 @@ const versioned: OverrideVersionedType[] = [
     }
   },
   {
-    minmax: [1005, undefined],
+    minmax: [1005, 1005],
     types: {
       Address: 'AccountId',
       Keys: 'SessionKeys5',
       LookupSource: 'AccountId',
       StakingLedger: 'StakingLedgerTo240'
     }
+  },
+  {
+    minmax: [1006, undefined],
+    types: {
+      Address: 'AccountId',
+      Keys: 'SessionKeys5',
+      LookupSource: 'AccountId'
+    }
   }
 ];