diff --git a/lerna.json b/lerna.json
index 82bec6bdfa..a9f78b8a9e 100644
--- a/lerna.json
+++ b/lerna.json
@@ -10,5 +10,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.6.5"
+  "version": "0.6.6"
 }
diff --git a/package.json b/package.json
index 19108d813c..72d23b516e 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.6.5",
+  "version": "0.6.6",
   "private": true,
   "workspaces": [
     "packages/*"
diff --git a/packages/api-format/package.json b/packages/api-format/package.json
index 40209093c9..6acbd28d18 100644
--- a/packages/api-format/package.json
+++ b/packages/api-format/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-format",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "Input/Output formatters for JsonRPC exchange",
   "main": "index.js",
   "keywords": [
@@ -30,7 +30,7 @@
     "test": "echo \"Tests only available from root wrapper\""
   },
   "devDependencies": {
-    "@polkadot/api-jsonrpc": "^0.6.5"
+    "@polkadot/api-jsonrpc": "^0.6.6"
   },
   "dependencies": {
     "@polkadot/primitives-json": "^0.3.1",
diff --git a/packages/api-jsonrpc/package.json b/packages/api-jsonrpc/package.json
index b9849c5e63..dffa8c9afc 100644
--- a/packages/api-jsonrpc/package.json
+++ b/packages/api-jsonrpc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-jsonrpc",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "Method definitions for the Polkadot RPC layer",
   "main": "index.js",
   "engines": {
diff --git a/packages/api-provider/package.json b/packages/api-provider/package.json
index f5ebd6e8dd..75064a4368 100644
--- a/packages/api-provider/package.json
+++ b/packages/api-provider/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-provider",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
diff --git a/packages/api/package.json b/packages/api/package.json
index ec5924459c..97e6f02b05 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "description": "A JavaScript wrapper for the Polkadot JsonRPC interface",
   "main": "index.js",
   "keywords": [
@@ -30,9 +30,9 @@
     "test": "echo \"Tests only available from root wrapper\""
   },
   "dependencies": {
-    "@polkadot/api-format": "^0.6.5",
-    "@polkadot/api-jsonrpc": "^0.6.5",
-    "@polkadot/api-provider": "^0.6.5",
+    "@polkadot/api-format": "^0.6.6",
+    "@polkadot/api-jsonrpc": "^0.6.6",
+    "@polkadot/api-provider": "^0.6.6",
     "@polkadot/util": "^0.9.1",
     "babel-runtime": "^6.26.0"
   }