diff --git a/lerna.json b/lerna.json
index a5094ddd6f..9050b3fdea 100644
--- a/lerna.json
+++ b/lerna.json
@@ -10,5 +10,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.15.3"
+  "version": "0.15.4"
 }
diff --git a/package.json b/package.json
index 06f60f5e5e..22c35deeb6 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.15.3",
+  "version": "0.15.4",
   "private": true,
   "engines": {
     "node": "^10.1.0",
diff --git a/packages/api-format/package.json b/packages/api-format/package.json
index 54990a19e3..7c23520d54 100644
--- a/packages/api-format/package.json
+++ b/packages/api-format/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-format",
-  "version": "0.15.3",
+  "version": "0.15.4",
   "description": "Input/Output formatters for JsonRPC exchange",
   "main": "index.js",
   "keywords": [
diff --git a/packages/api-provider/package.json b/packages/api-provider/package.json
index 987daf70e9..b8b7249d8b 100644
--- a/packages/api-provider/package.json
+++ b/packages/api-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-provider",
-  "version": "0.15.3",
+  "version": "0.15.4",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
diff --git a/packages/api-rx/package.json b/packages/api-rx/package.json
index b801148fe5..52967afc29 100644
--- a/packages/api-rx/package.json
+++ b/packages/api-rx/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-rx",
-  "version": "0.15.3",
+  "version": "0.15.4",
   "description": "An RxJs wrapper around the Polkadot JS API",
   "main": "index.js",
   "keywords": [
@@ -35,8 +35,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.51",
-    "@polkadot/api": "^0.15.3",
-    "@polkadot/api-provider": "^0.15.3",
+    "@polkadot/api": "^0.15.4",
+    "@polkadot/api-provider": "^0.15.4",
     "@types/rx": "^4.1.1",
     "rxjs": "^6.2.2"
   }
diff --git a/packages/api/package.json b/packages/api/package.json
index e00841ce0b..b85de656eb 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "0.15.3",
+  "version": "0.15.4",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
   "keywords": [
@@ -35,8 +35,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.51",
-    "@polkadot/api-format": "^0.15.3",
-    "@polkadot/api-provider": "^0.15.3",
+    "@polkadot/api-format": "^0.15.4",
+    "@polkadot/api-provider": "^0.15.4",
     "@polkadot/jsonrpc": "^0.27.9",
     "@polkadot/params": "^0.27.9",
     "@polkadot/util": "^0.27.9"