diff --git a/lerna.json b/lerna.json
index f6a8c8726d..c6bc94da58 100644
--- a/lerna.json
+++ b/lerna.json
@@ -9,5 +9,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.81.0-beta.11"
+  "version": "0.81.0-beta.12"
 }
diff --git a/package.json b/package.json
index 574da56b51..0d90e3c991 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "private": true,
   "engines": {
     "yarn": "^1.10.1"
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index 9f665d0a34..58a1998ea3 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "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": "^7.4.5",
-    "@polkadot/api": "^0.81.0-beta.11",
-    "@polkadot/types": "^0.81.0-beta.11",
+    "@polkadot/api": "^0.81.0-beta.12",
+    "@polkadot/types": "^0.81.0-beta.12",
     "@types/memoizee": "^0.4.2",
     "memoizee": "^0.4.14"
   },
diff --git a/packages/api/package.json b/packages/api/package.json
index 4ba2924a55..1ec93cedd4 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
   "main": "index.js",
   "keywords": [
@@ -27,12 +27,12 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/api-derive": "^0.81.0-beta.11",
-    "@polkadot/extrinsics": "^0.81.0-beta.11",
-    "@polkadot/rpc-provider": "^0.81.0-beta.11",
-    "@polkadot/rpc-rx": "^0.81.0-beta.11",
-    "@polkadot/storage": "^0.81.0-beta.11",
-    "@polkadot/types": "^0.81.0-beta.11",
+    "@polkadot/api-derive": "^0.81.0-beta.12",
+    "@polkadot/extrinsics": "^0.81.0-beta.12",
+    "@polkadot/rpc-provider": "^0.81.0-beta.12",
+    "@polkadot/rpc-rx": "^0.81.0-beta.12",
+    "@polkadot/storage": "^0.81.0-beta.12",
+    "@polkadot/types": "^0.81.0-beta.12",
     "@polkadot/util-crypto": "^0.93.0-beta.4"
   },
   "devDependencies": {
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index c873c24ced..56bda3a2bb 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "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": "^7.4.5",
-    "@polkadot/jsonrpc": "^0.81.0-beta.11",
-    "@polkadot/rpc-provider": "^0.81.0-beta.11",
-    "@polkadot/types": "^0.81.0-beta.11",
+    "@polkadot/jsonrpc": "^0.81.0-beta.12",
+    "@polkadot/rpc-provider": "^0.81.0-beta.12",
+    "@polkadot/types": "^0.81.0-beta.12",
     "@polkadot/util": "^0.93.0-beta.4"
   }
 }
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 69affca608..5cd05bfed9 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "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": "^7.4.5",
-    "@polkadot/storage": "^0.81.0-beta.11",
+    "@polkadot/storage": "^0.81.0-beta.12",
     "@polkadot/util": "^0.93.0-beta.4",
     "@polkadot/util-crypto": "^0.93.0-beta.4",
     "@types/nock": "^10.0.3",
diff --git a/packages/rpc-rx/package.json b/packages/rpc-rx/package.json
index 437e1aa5f0..51cccd2d46 100644
--- a/packages/rpc-rx/package.json
+++ b/packages/rpc-rx/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-rx",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "description": "An RxJs wrapper around the Polkadot JS API",
   "main": "index.js",
   "keywords": [
@@ -27,8 +27,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-rx#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/rpc-core": "^0.81.0-beta.11",
-    "@polkadot/rpc-provider": "^0.81.0-beta.11",
+    "@polkadot/rpc-core": "^0.81.0-beta.12",
+    "@polkadot/rpc-provider": "^0.81.0-beta.12",
     "@types/memoizee": "^0.4.2",
     "@types/rx": "^4.1.1",
     "memoizee": "^0.4.14",
diff --git a/packages/type-extrinsics/package.json b/packages/type-extrinsics/package.json
index f2fcb009b5..b782ae90a2 100644
--- a/packages/type-extrinsics/package.json
+++ b/packages/type-extrinsics/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/extrinsics",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "main": "index.js",
   "repository": "https://github.com/polkadot-js/api.git",
   "author": "Jaco Greeff <jacogr@gmail.com>",
@@ -11,7 +11,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/types": "^0.81.0-beta.11",
+    "@polkadot/types": "^0.81.0-beta.12",
     "@polkadot/util": "^0.93.0-beta.4"
   }
 }
diff --git a/packages/type-jsonrpc/package.json b/packages/type-jsonrpc/package.json
index b59aebc4ed..7eca530521 100644
--- a/packages/type-jsonrpc/package.json
+++ b/packages/type-jsonrpc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/jsonrpc",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "description": "Method definitions for the Polkadot RPC layer",
   "main": "index.js",
   "publishConfig": {
diff --git a/packages/type-storage/package.json b/packages/type-storage/package.json
index 0065e22bd6..5e104876ce 100644
--- a/packages/type-storage/package.json
+++ b/packages/type-storage/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/storage",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "description": "Generic wrapper wrapper around state storage",
   "main": "index.js",
   "publishConfig": {
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/type-storage#readme",
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@polkadot/types": "^0.81.0-beta.11",
+    "@polkadot/types": "^0.81.0-beta.12",
     "@polkadot/util": "^0.93.0-beta.4",
     "@polkadot/util-crypto": "^0.93.0-beta.4"
   },
diff --git a/packages/types/package.json b/packages/types/package.json
index 0606fd8497..a0cab9f63a 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "0.81.0-beta.11",
+  "version": "0.81.0-beta.12",
   "description": "Implementation of the Parity codec",
   "main": "index.js",
   "keywords": [