diff --git a/lerna.json b/lerna.json
index f74e556a..36d386df 100644
--- a/lerna.json
+++ b/lerna.json
@@ -9,5 +9,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.3.1"
+  "version": "0.4.0-beta.0"
 }
diff --git a/package.json b/package.json
index 18c77d69..dd9e5125 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.3.1",
+  "version": "0.4.0-beta.0",
   "description": "A sample signer extension for the @polkadot/api",
   "repository": "https://github.com/polkadot-js/extension",
   "author": "Jaco Greeff <jacogr@gmail.com>",
diff --git a/packages/extension-dapp/package.json b/packages/extension-dapp/package.json
index ea733c59..9e6e4c5a 100644
--- a/packages/extension-dapp/package.json
+++ b/packages/extension-dapp/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@polkadot/extension-dapp",
   "description": "Provides an interfaces around the injected globals for ease of access by dapp developers.",
-  "version": "0.3.1",
+  "version": "0.4.0-beta.0",
   "author": "Jaco Greeff <jacogr@gmail.com>",
   "license": "Apache-2",
   "dependencies": {
-    "@polkadot/extension-inject": "^0.3.1"
+    "@polkadot/extension-inject": "^0.4.0-beta.0"
   },
   "peerDependencies": {
     "@babel/runtime": "^7.5.4",
diff --git a/packages/extension-inject/package.json b/packages/extension-inject/package.json
index 811b58af..f18ef63f 100644
--- a/packages/extension-inject/package.json
+++ b/packages/extension-inject/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@polkadot/extension-inject",
   "description": "A generic injector (usable to any extension), that populates the base exposed interfaces to be used by dapps.",
-  "version": "0.3.1",
+  "version": "0.4.0-beta.0",
   "author": "Jaco Greeff <jacogr@gmail.com>",
   "license": "Apache-2",
   "peerDependencies": {
diff --git a/packages/extension-ui/package.json b/packages/extension-ui/package.json
index 341db390..b877ccdf 100644
--- a/packages/extension-ui/package.json
+++ b/packages/extension-ui/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@polkadot/extension-ui",
   "description": "A sample signer extension for the @polkadot/api",
-  "version": "0.3.1",
+  "version": "0.4.0-beta.0",
   "author": "Jaco Greeff <jacogr@gmail.com>",
   "license": "Apache-2",
   "dependencies": {
diff --git a/packages/extension/package.json b/packages/extension/package.json
index 46eb898b..e6a922c6 100644
--- a/packages/extension/package.json
+++ b/packages/extension/package.json
@@ -1,12 +1,12 @@
 {
   "name": "@polkadot/extension",
   "description": "A sample signer extension for the @polkadot/api",
-  "version": "0.3.1",
+  "version": "0.4.0-beta.0",
   "author": "Jaco Greeff <jacogr@gmail.com>",
   "license": "Apache-2",
   "dependencies": {
     "@polkadot/api": "^0.82.0-beta.56",
-    "@polkadot/extension-ui": "^0.3.1",
+    "@polkadot/extension-ui": "^0.4.0-beta.0",
     "@polkadot/ui-keyring": "^0.42.0-beta.9"
   },
   "devDependencies": {