diff --git a/package.json b/package.json
index b38585a04f48..3923b820e183 100644
--- a/package.json
+++ b/package.json
@@ -37,5 +37,5 @@
     "typedoc-plugin-markdown": "^3.0.7",
     "typedoc-plugin-no-inherit": "^1.2.0"
   },
-  "version": "2.1.2-14"
+  "version": "2.1.2-15"
 }
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index bffd7f6278cd..190f94b83f4d 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-contract",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Interfaces for interacting with contracts and contract ABIs",
   "main": "index.js",
   "keywords": [
@@ -27,9 +27,9 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-contract#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/api": "2.1.2-14",
-    "@polkadot/rpc-core": "2.1.2-14",
-    "@polkadot/types": "2.1.2-14",
+    "@polkadot/api": "2.1.2-15",
+    "@polkadot/rpc-core": "2.1.2-15",
+    "@polkadot/types": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "bn.js": "^5.1.3",
     "rxjs": "^6.6.3"
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index ea28c2ab15d0..cc6980792e73 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Common functions used across Polkadot, derived from RPC calls and storage queries.",
   "main": "index.js",
   "keywords": [
@@ -28,10 +28,10 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api-derive#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/api": "2.1.2-14",
-    "@polkadot/rpc-core": "2.1.2-14",
-    "@polkadot/rpc-provider": "2.1.2-14",
-    "@polkadot/types": "2.1.2-14",
+    "@polkadot/api": "2.1.2-15",
+    "@polkadot/rpc-core": "2.1.2-15",
+    "@polkadot/rpc-provider": "2.1.2-15",
+    "@polkadot/types": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "@polkadot/util-crypto": "^3.5.1",
     "bn.js": "^5.1.3",
diff --git a/packages/api/package.json b/packages/api/package.json
index 5aea99063c43..4662e0c87dd2 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Promise and RxJS wrappers around the Polkadot JS RPC",
   "main": "index.js",
   "keywords": [
@@ -27,13 +27,13 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/api#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/api-derive": "2.1.2-14",
+    "@polkadot/api-derive": "2.1.2-15",
     "@polkadot/keyring": "^3.5.1",
-    "@polkadot/metadata": "2.1.2-14",
-    "@polkadot/rpc-core": "2.1.2-14",
-    "@polkadot/rpc-provider": "2.1.2-14",
-    "@polkadot/types": "2.1.2-14",
-    "@polkadot/types-known": "2.1.2-14",
+    "@polkadot/metadata": "2.1.2-15",
+    "@polkadot/rpc-core": "2.1.2-15",
+    "@polkadot/rpc-provider": "2.1.2-15",
+    "@polkadot/types": "2.1.2-15",
+    "@polkadot/types-known": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "@polkadot/util-crypto": "^3.5.1",
     "bn.js": "^5.1.3",
diff --git a/packages/metadata/package.json b/packages/metadata/package.json
index 5b3d7c0e0dc9..584bb5e747e5 100644
--- a/packages/metadata/package.json
+++ b/packages/metadata/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/metadata",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Helpers to extract information from runtime metadata",
   "main": "index.js",
   "publishConfig": {
@@ -27,8 +27,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/type-metadata#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/types": "2.1.2-14",
-    "@polkadot/types-known": "2.1.2-14",
+    "@polkadot/types": "2.1.2-15",
+    "@polkadot/types-known": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "@polkadot/util-crypto": "^3.5.1",
     "bn.js": "^5.1.3"
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index d84360d03026..5cf718070719 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "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": "^7.11.2",
-    "@polkadot/metadata": "2.1.2-14",
-    "@polkadot/rpc-provider": "2.1.2-14",
-    "@polkadot/types": "2.1.2-14",
+    "@polkadot/metadata": "2.1.2-15",
+    "@polkadot/rpc-provider": "2.1.2-15",
+    "@polkadot/types": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "memoizee": "^0.4.14",
     "rxjs": "^6.6.3"
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 4c5502857d91..38eeba1b32ab 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
@@ -27,8 +27,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-provider#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/metadata": "2.1.2-14",
-    "@polkadot/types": "2.1.2-14",
+    "@polkadot/metadata": "2.1.2-15",
+    "@polkadot/types": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "@polkadot/util-crypto": "^3.5.1",
     "@polkadot/x-fetch": "^0.3.2",
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index 18cac381b563..3c8b172451d5 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/typegen",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Type generation scripts",
   "main": "index.js",
   "bin": {
@@ -36,10 +36,10 @@
     "@babel/core": "^7.11.6",
     "@babel/register": "^7.11.5",
     "@babel/runtime": "^7.11.2",
-    "@polkadot/api": "2.1.2-14",
-    "@polkadot/metadata": "2.1.2-14",
-    "@polkadot/rpc-provider": "2.1.2-14",
-    "@polkadot/types": "2.1.2-14",
+    "@polkadot/api": "2.1.2-15",
+    "@polkadot/metadata": "2.1.2-15",
+    "@polkadot/rpc-provider": "2.1.2-15",
+    "@polkadot/types": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "handlebars": "^4.7.6",
     "websocket": "^1.0.32",
diff --git a/packages/types-known/package.json b/packages/types-known/package.json
index a9cea297267c..c5b43b07d69b 100644
--- a/packages/types-known/package.json
+++ b/packages/types-known/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types-known",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
   "keywords": [
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/types-known#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/types": "2.1.2-14",
+    "@polkadot/types": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "bn.js": "^5.1.3"
   },
diff --git a/packages/types/package.json b/packages/types/package.json
index 528ef2ddaa00..75013d772dda 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "2.1.2-14",
+  "version": "2.1.2-15",
   "description": "Implementation of the Parity codec",
   "main": "index.js",
   "keywords": [
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/types#readme",
   "dependencies": {
     "@babel/runtime": "^7.11.2",
-    "@polkadot/metadata": "2.1.2-14",
+    "@polkadot/metadata": "2.1.2-15",
     "@polkadot/util": "^3.5.1",
     "@polkadot/util-crypto": "^3.5.1",
     "@types/bn.js": "^4.11.6",
diff --git a/yarn.lock b/yarn.lock
index ce7d62772bff..7adfbcd875c0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1721,25 +1721,25 @@ __metadata:
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
     "@babel/runtime": ^7.11.2
-    "@polkadot/api": 2.1.2-14
-    "@polkadot/rpc-core": 2.1.2-14
-    "@polkadot/types": 2.1.2-14
+    "@polkadot/api": 2.1.2-15
+    "@polkadot/rpc-core": 2.1.2-15
+    "@polkadot/types": 2.1.2-15
     "@polkadot/util": ^3.5.1
     bn.js: ^5.1.3
     rxjs: ^6.6.3
   languageName: unknown
   linkType: soft
 
-"@polkadot/api-derive@2.1.2-14, @polkadot/api-derive@workspace:packages/api-derive":
+"@polkadot/api-derive@2.1.2-15, @polkadot/api-derive@workspace:packages/api-derive":
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
     "@babel/runtime": ^7.11.2
-    "@polkadot/api": 2.1.2-14
+    "@polkadot/api": 2.1.2-15
     "@polkadot/keyring": ^3.5.1
-    "@polkadot/rpc-core": 2.1.2-14
-    "@polkadot/rpc-provider": 2.1.2-14
-    "@polkadot/types": 2.1.2-14
+    "@polkadot/rpc-core": 2.1.2-15
+    "@polkadot/rpc-provider": 2.1.2-15
+    "@polkadot/types": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@polkadot/util-crypto": ^3.5.1
     bn.js: ^5.1.3
@@ -1748,18 +1748,18 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/api@2.1.2-14, @polkadot/api@workspace:packages/api":
+"@polkadot/api@2.1.2-15, @polkadot/api@workspace:packages/api":
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
     "@babel/runtime": ^7.11.2
-    "@polkadot/api-derive": 2.1.2-14
+    "@polkadot/api-derive": 2.1.2-15
     "@polkadot/keyring": ^3.5.1
-    "@polkadot/metadata": 2.1.2-14
-    "@polkadot/rpc-core": 2.1.2-14
-    "@polkadot/rpc-provider": 2.1.2-14
-    "@polkadot/types": 2.1.2-14
-    "@polkadot/types-known": 2.1.2-14
+    "@polkadot/metadata": 2.1.2-15
+    "@polkadot/rpc-core": 2.1.2-15
+    "@polkadot/rpc-provider": 2.1.2-15
+    "@polkadot/types": 2.1.2-15
+    "@polkadot/types-known": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@polkadot/util-crypto": ^3.5.1
     bn.js: ^5.1.3
@@ -1873,43 +1873,43 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/metadata@2.1.2-14, @polkadot/metadata@workspace:packages/metadata":
+"@polkadot/metadata@2.1.2-15, @polkadot/metadata@workspace:packages/metadata":
   version: 0.0.0-use.local
   resolution: "@polkadot/metadata@workspace:packages/metadata"
   dependencies:
     "@babel/runtime": ^7.11.2
     "@polkadot/keyring": ^3.5.1
-    "@polkadot/types": 2.1.2-14
-    "@polkadot/types-known": 2.1.2-14
+    "@polkadot/types": 2.1.2-15
+    "@polkadot/types-known": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@polkadot/util-crypto": ^3.5.1
     bn.js: ^5.1.3
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-core@2.1.2-14, @polkadot/rpc-core@workspace:packages/rpc-core":
+"@polkadot/rpc-core@2.1.2-15, @polkadot/rpc-core@workspace:packages/rpc-core":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.11.2
     "@polkadot/keyring": ^3.5.1
-    "@polkadot/metadata": 2.1.2-14
-    "@polkadot/rpc-provider": 2.1.2-14
-    "@polkadot/types": 2.1.2-14
+    "@polkadot/metadata": 2.1.2-15
+    "@polkadot/rpc-provider": 2.1.2-15
+    "@polkadot/types": 2.1.2-15
     "@polkadot/util": ^3.5.1
     memoizee: ^0.4.14
     rxjs: ^6.6.3
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-provider@2.1.2-14, @polkadot/rpc-provider@workspace:packages/rpc-provider":
+"@polkadot/rpc-provider@2.1.2-15, @polkadot/rpc-provider@workspace:packages/rpc-provider":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.11.2
     "@polkadot/keyring": ^3.5.1
-    "@polkadot/metadata": 2.1.2-14
-    "@polkadot/types": 2.1.2-14
+    "@polkadot/metadata": 2.1.2-15
+    "@polkadot/types": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@polkadot/util-crypto": ^3.5.1
     "@polkadot/x-fetch": ^0.3.2
@@ -1937,10 +1937,10 @@ __metadata:
     "@babel/core": ^7.11.6
     "@babel/register": ^7.11.5
     "@babel/runtime": ^7.11.2
-    "@polkadot/api": 2.1.2-14
-    "@polkadot/metadata": 2.1.2-14
-    "@polkadot/rpc-provider": 2.1.2-14
-    "@polkadot/types": 2.1.2-14
+    "@polkadot/api": 2.1.2-15
+    "@polkadot/metadata": 2.1.2-15
+    "@polkadot/rpc-provider": 2.1.2-15
+    "@polkadot/types": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@types/websocket": ^1.0.1
     "@types/yargs": ^15.0.7
@@ -1956,25 +1956,25 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-known@2.1.2-14, @polkadot/types-known@workspace:packages/types-known":
+"@polkadot/types-known@2.1.2-15, @polkadot/types-known@workspace:packages/types-known":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-known@workspace:packages/types-known"
   dependencies:
     "@babel/runtime": ^7.11.2
-    "@polkadot/types": 2.1.2-14
+    "@polkadot/types": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@types/bn.js": ^4.11.6
     bn.js: ^5.1.3
   languageName: unknown
   linkType: soft
 
-"@polkadot/types@2.1.2-14, @polkadot/types@workspace:packages/types":
+"@polkadot/types@2.1.2-15, @polkadot/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.11.2
     "@polkadot/keyring": ^3.5.1
-    "@polkadot/metadata": 2.1.2-14
+    "@polkadot/metadata": 2.1.2-15
     "@polkadot/util": ^3.5.1
     "@polkadot/util-crypto": ^3.5.1
     "@types/bn.js": ^4.11.6