diff --git a/lerna.json b/lerna.json
index 307136822284..442e9588cca9 100644
--- a/lerna.json
+++ b/lerna.json
@@ -9,5 +9,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "1.5.0"
+  "version": "1.5.1"
 }
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index cedb965c6efc..5c82a610f706 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-contract",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "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": "^7.8.4",
-    "@polkadot/api": "1.5.0",
-    "@polkadot/rpc-core": "1.5.0",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/api": "1.5.1",
+    "@polkadot/rpc-core": "1.5.1",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "bn.js": "^5.1.1",
     "rxjs": "^6.5.4"
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index 3b4f561da620..de003b1740c0 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-derive",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "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": "^7.8.4",
-    "@polkadot/api": "1.5.0",
-    "@polkadot/rpc-core": "1.5.0",
-    "@polkadot/rpc-provider": "1.5.0",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/api": "1.5.1",
+    "@polkadot/rpc-core": "1.5.1",
+    "@polkadot/rpc-provider": "1.5.1",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "@polkadot/util-crypto": "^2.6.1",
     "bn.js": "^5.1.1",
diff --git a/packages/api/package.json b/packages/api/package.json
index 66766df53420..48e4cdfe3258 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "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": "^7.8.4",
-    "@polkadot/api-derive": "1.5.0",
+    "@polkadot/api-derive": "1.5.1",
     "@polkadot/keyring": "^2.6.1",
-    "@polkadot/metadata": "1.5.0",
-    "@polkadot/rpc-core": "1.5.0",
-    "@polkadot/rpc-provider": "1.5.0",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/metadata": "1.5.1",
+    "@polkadot/rpc-core": "1.5.1",
+    "@polkadot/rpc-provider": "1.5.1",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "@polkadot/util-crypto": "^2.6.1",
     "bn.js": "^5.1.1",
diff --git a/packages/jsonrpc/package.json b/packages/jsonrpc/package.json
index 9f9e8d18b431..5675c544d5fb 100644
--- a/packages/jsonrpc/package.json
+++ b/packages/jsonrpc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/jsonrpc",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "description": "Method definitions for the Polkadot RPC layer",
   "main": "index.js",
   "publishConfig": {
@@ -27,7 +27,7 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/jsonrpc#readme",
   "dependencies": {
     "@babel/runtime": "^7.8.4",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1"
   }
 }
diff --git a/packages/metadata/package.json b/packages/metadata/package.json
index 09a9f3bba995..eab4812f4b58 100644
--- a/packages/metadata/package.json
+++ b/packages/metadata/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/metadata",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "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": "^7.8.4",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "@polkadot/util-crypto": "^2.6.1",
     "bn.js": "^5.1.1"
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index 84477b1d4127..93ff9dab74e1 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-core",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
   "keywords": [
@@ -27,10 +27,10 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-core#readme",
   "dependencies": {
     "@babel/runtime": "^7.8.4",
-    "@polkadot/jsonrpc": "1.5.0",
-    "@polkadot/metadata": "1.5.0",
-    "@polkadot/rpc-provider": "1.5.0",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/jsonrpc": "1.5.1",
+    "@polkadot/metadata": "1.5.1",
+    "@polkadot/rpc-provider": "1.5.1",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "memoizee": "^0.4.14",
     "rxjs": "^6.5.4"
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 1e7dfbe4a632..ca3526379531 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/rpc-provider",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
@@ -27,9 +27,9 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/rpc-provider#readme",
   "dependencies": {
     "@babel/runtime": "^7.8.4",
-    "@polkadot/jsonrpc": "1.5.0",
-    "@polkadot/metadata": "1.5.0",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/jsonrpc": "1.5.1",
+    "@polkadot/metadata": "1.5.1",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "@polkadot/util-crypto": "^2.6.1",
     "bn.js": "^5.1.1",
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index 3c9c96c4cf96..a46ae86eed34 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/typegen",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "description": "Type generation scripts",
   "main": "index.js",
   "bin": {
@@ -36,11 +36,11 @@
     "@babel/core": "^7.8.3",
     "@babel/register": "^7.8.3",
     "@babel/runtime": "^7.8.4",
-    "@polkadot/api": "1.5.0",
-    "@polkadot/jsonrpc": "1.5.0",
-    "@polkadot/metadata": "1.5.0",
-    "@polkadot/rpc-provider": "1.5.0",
-    "@polkadot/types": "1.5.0",
+    "@polkadot/api": "1.5.1",
+    "@polkadot/jsonrpc": "1.5.1",
+    "@polkadot/metadata": "1.5.1",
+    "@polkadot/rpc-provider": "1.5.1",
+    "@polkadot/types": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "websocket": "^1.0.31",
     "yargs": "^15.1.0"
diff --git a/packages/types/package.json b/packages/types/package.json
index 0bc54e5d23f2..c9ba6d1375be 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/types",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "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": "^7.8.4",
-    "@polkadot/metadata": "1.5.0",
+    "@polkadot/metadata": "1.5.1",
     "@polkadot/util": "^2.6.1",
     "@polkadot/util-crypto": "^2.6.1",
     "@types/bn.js": "^4.11.6",
diff --git a/yarn.lock b/yarn.lock
index a200f90445fb..742596295233 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2756,25 +2756,25 @@ __metadata:
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
     "@babel/runtime": ^7.8.4
-    "@polkadot/api": 1.5.0
-    "@polkadot/rpc-core": 1.5.0
-    "@polkadot/types": 1.5.0
+    "@polkadot/api": 1.5.1
+    "@polkadot/rpc-core": 1.5.1
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     bn.js: ^5.1.1
     rxjs: ^6.5.4
   languageName: unknown
   linkType: soft
 
-"@polkadot/api-derive@1.5.0, @polkadot/api-derive@workspace:packages/api-derive":
+"@polkadot/api-derive@1.5.1, @polkadot/api-derive@workspace:packages/api-derive":
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
     "@babel/runtime": ^7.8.4
-    "@polkadot/api": 1.5.0
+    "@polkadot/api": 1.5.1
     "@polkadot/keyring": ^2.6.1
-    "@polkadot/rpc-core": 1.5.0
-    "@polkadot/rpc-provider": 1.5.0
-    "@polkadot/types": 1.5.0
+    "@polkadot/rpc-core": 1.5.1
+    "@polkadot/rpc-provider": 1.5.1
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     "@polkadot/util-crypto": ^2.6.1
     bn.js: ^5.1.1
@@ -2783,17 +2783,17 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/api@1.5.0, @polkadot/api@workspace:packages/api":
+"@polkadot/api@1.5.1, @polkadot/api@workspace:packages/api":
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
     "@babel/runtime": ^7.8.4
-    "@polkadot/api-derive": 1.5.0
+    "@polkadot/api-derive": 1.5.1
     "@polkadot/keyring": ^2.6.1
-    "@polkadot/metadata": 1.5.0
-    "@polkadot/rpc-core": 1.5.0
-    "@polkadot/rpc-provider": 1.5.0
-    "@polkadot/types": 1.5.0
+    "@polkadot/metadata": 1.5.1
+    "@polkadot/rpc-core": 1.5.1
+    "@polkadot/rpc-provider": 1.5.1
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     "@polkadot/util-crypto": ^2.6.1
     bn.js: ^5.1.1
@@ -2890,12 +2890,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/jsonrpc@1.5.0, @polkadot/jsonrpc@workspace:packages/jsonrpc":
+"@polkadot/jsonrpc@1.5.1, @polkadot/jsonrpc@workspace:packages/jsonrpc":
   version: 0.0.0-use.local
   resolution: "@polkadot/jsonrpc@workspace:packages/jsonrpc"
   dependencies:
     "@babel/runtime": ^7.8.4
-    "@polkadot/types": 1.5.0
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
   languageName: unknown
   linkType: soft
@@ -2911,44 +2911,44 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/metadata@1.5.0, @polkadot/metadata@workspace:packages/metadata":
+"@polkadot/metadata@1.5.1, @polkadot/metadata@workspace:packages/metadata":
   version: 0.0.0-use.local
   resolution: "@polkadot/metadata@workspace:packages/metadata"
   dependencies:
     "@babel/runtime": ^7.8.4
     "@polkadot/keyring": ^2.6.1
-    "@polkadot/types": 1.5.0
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     "@polkadot/util-crypto": ^2.6.1
     bn.js: ^5.1.1
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-core@1.5.0, @polkadot/rpc-core@workspace:packages/rpc-core":
+"@polkadot/rpc-core@1.5.1, @polkadot/rpc-core@workspace:packages/rpc-core":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.8.4
-    "@polkadot/jsonrpc": 1.5.0
+    "@polkadot/jsonrpc": 1.5.1
     "@polkadot/keyring": ^2.6.1
-    "@polkadot/metadata": 1.5.0
-    "@polkadot/rpc-provider": 1.5.0
-    "@polkadot/types": 1.5.0
+    "@polkadot/metadata": 1.5.1
+    "@polkadot/rpc-provider": 1.5.1
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     memoizee: ^0.4.14
     rxjs: ^6.5.4
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-provider@1.5.0, @polkadot/rpc-provider@workspace:packages/rpc-provider":
+"@polkadot/rpc-provider@1.5.1, @polkadot/rpc-provider@workspace:packages/rpc-provider":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.8.4
-    "@polkadot/jsonrpc": 1.5.0
+    "@polkadot/jsonrpc": 1.5.1
     "@polkadot/keyring": ^2.6.1
-    "@polkadot/metadata": 1.5.0
-    "@polkadot/types": 1.5.0
+    "@polkadot/metadata": 1.5.1
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     "@polkadot/util-crypto": ^2.6.1
     bn.js: ^5.1.1
@@ -2976,11 +2976,11 @@ __metadata:
     "@babel/core": ^7.8.3
     "@babel/register": ^7.8.3
     "@babel/runtime": ^7.8.4
-    "@polkadot/api": 1.5.0
-    "@polkadot/jsonrpc": 1.5.0
-    "@polkadot/metadata": 1.5.0
-    "@polkadot/rpc-provider": 1.5.0
-    "@polkadot/types": 1.5.0
+    "@polkadot/api": 1.5.1
+    "@polkadot/jsonrpc": 1.5.1
+    "@polkadot/metadata": 1.5.1
+    "@polkadot/rpc-provider": 1.5.1
+    "@polkadot/types": 1.5.1
     "@polkadot/util": ^2.6.1
     "@types/websocket": ^1.0.0
     "@types/yargs": ^15.0.3
@@ -2995,13 +2995,13 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types@1.5.0, @polkadot/types@workspace:packages/types":
+"@polkadot/types@1.5.1, @polkadot/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.8.4
     "@polkadot/keyring": ^2.6.1
-    "@polkadot/metadata": 1.5.0
+    "@polkadot/metadata": 1.5.1
     "@polkadot/util": ^2.6.1
     "@polkadot/util-crypto": ^2.6.1
     "@types/bn.js": ^4.11.6