diff --git a/docs/METHODS_RPC.md b/docs/METHODS_RPC.md
index cfe09c3326..d817695dcb 100644
--- a/docs/METHODS_RPC.md
+++ b/docs/METHODS_RPC.md
@@ -54,18 +54,12 @@ _Retrieval of chain data_
 ▸ **getHeader**(hash?: `Hash`): `Header`
 - **summary**: Retrieves the header for a specific block
 
-▸ **getRuntimeVersion**(hash?: `Hash`): `RuntimeVersion`
-- **summary**: Get the runtime version (alias of state_getRuntimeVersion)
-
 ▸ **subscribeFinalizedHeads**(): `Header`
 - **summary**: Retrieves the best finalized header via subscription
 
 ▸ **subscribeNewHeads**(): `Header`
 - **summary**: Retrieves the best header via subscription
 
-▸ **subscribeRuntimeVersion**(): `RuntimeVersion`
-- **summary**: Retrieves the runtime version via subscription
-
 ___
 
 
@@ -109,6 +103,9 @@ _Query of state_
 ▸ **queryStorage**(keys: `Vec<StorageKey>`, startBlock: `Hash`, block?: `Hash`): `Vec<StorageChangeSet>`
 - **summary**: Query historical storage entries (by key) starting from a start block
 
+▸ **subscribeRuntimeVersion**(): `RuntimeVersion`
+- **summary**: Retrieves the runtime version via subscription
+
 ▸ **subscribeStorage**(keys: `Vec<StorageKey>`): `StorageChangeSet`
 - **summary**: Subscribes to storage changes for the provided keys
 
diff --git a/lerna.json b/lerna.json
index 50cb645cf0..ad86751ce8 100644
--- a/lerna.json
+++ b/lerna.json
@@ -9,5 +9,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.90.1"
+  "version": "0.91.0-beta.0"
 }
diff --git a/package.json b/package.json
index d762dc72c8..e28f1372e5 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "private": true,
   "engines": {
     "yarn": "^1.10.1"
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index ff9e9d4e41..be6d3efe74 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-contract",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Interfaces for interacting with contracts and contract ABIs",
   "main": "index.js",
   "keywords": [
@@ -27,6 +27,6 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-contract#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/types": "^0.90.1"
+    "@polkadot/types": "^0.91.0-beta.0"
   }
 }
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index c1ceed0798..9684cd0c55 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Common functions used across Polkadot, derived from RPC calls and storage queries.",
   "main": "index.js",
   "keywords": [
@@ -28,8 +28,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-derive#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/api": "^0.90.1",
-    "@polkadot/types": "^0.90.1"
+    "@polkadot/api": "^0.91.0-beta.0",
+    "@polkadot/types": "^0.91.0-beta.0"
   },
   "devDependencies": {
     "@polkadot/keyring": "^1.1.1"
diff --git a/packages/api-metadata/package.json b/packages/api-metadata/package.json
index b6d894ff8b..51d7b7a92c 100644
--- a/packages/api-metadata/package.json
+++ b/packages/api-metadata/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-metadata",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Helpers to extract information from runtime metadata",
   "main": "index.js",
   "publishConfig": {
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/type-metadata#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/types": "^0.90.1",
+    "@polkadot/types": "^0.91.0-beta.0",
     "@polkadot/util": "^1.1.1",
     "@polkadot/util-crypto": "^1.1.1"
   },
diff --git a/packages/api/package.json b/packages/api/package.json
index ecd650d2cb..c2cd25698d 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
   "main": "index.js",
   "keywords": [
@@ -27,11 +27,11 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/api-derive": "^0.90.1",
-    "@polkadot/api-metadata": "^0.90.1",
-    "@polkadot/rpc-core": "^0.90.1",
-    "@polkadot/rpc-provider": "^0.90.1",
-    "@polkadot/types": "^0.90.1",
+    "@polkadot/api-derive": "^0.91.0-beta.0",
+    "@polkadot/api-metadata": "^0.91.0-beta.0",
+    "@polkadot/rpc-core": "^0.91.0-beta.0",
+    "@polkadot/rpc-provider": "^0.91.0-beta.0",
+    "@polkadot/types": "^0.91.0-beta.0",
     "@polkadot/util-crypto": "^1.1.1"
   },
   "devDependencies": {
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index c79aa85f8b..08ca321761 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
   "keywords": [
@@ -27,9 +27,9 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/jsonrpc": "^0.90.1",
-    "@polkadot/rpc-provider": "^0.90.1",
-    "@polkadot/types": "^0.90.1",
+    "@polkadot/jsonrpc": "^0.91.0-beta.0",
+    "@polkadot/rpc-provider": "^0.91.0-beta.0",
+    "@polkadot/types": "^0.91.0-beta.0",
     "@polkadot/util": "^1.1.1",
     "rxjs": "^6.5.2"
   }
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index d6c83e6c99..e7b8c0f50e 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-provider#readme",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@polkadot/api-metadata": "^0.90.1",
+    "@polkadot/api-metadata": "^0.91.0-beta.0",
     "@polkadot/util": "^1.1.1",
     "@polkadot/util-crypto": "^1.1.1",
     "@types/nock": "^10.0.3",
diff --git a/packages/type-jsonrpc/package.json b/packages/type-jsonrpc/package.json
index ebd206f4cb..5f52586eee 100644
--- a/packages/type-jsonrpc/package.json
+++ b/packages/type-jsonrpc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/jsonrpc",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Method definitions for the Polkadot RPC layer",
   "main": "index.js",
   "publishConfig": {
diff --git a/packages/types/package.json b/packages/types/package.json
index 5891fbc45d..02e013475d 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "0.90.1",
+  "version": "0.91.0-beta.0",
   "description": "Implementation of the Parity codec",
   "main": "index.js",
   "keywords": [