diff --git a/package.json b/package.json
index 895ec8baf3..24a872848e 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.77.1",
+  "version": "0.0.0",
   "private": true,
   "engines": {
     "node": ">=10.13.0",
@@ -13,20 +13,20 @@
     "typescript": "^3.4.3"
   },
   "scripts": {
-    "build": "polkadot-dev-build-ts && yarn run build:methodsdoc && polkadot-dev-build-docs",
+    "build": "plugnet-dev-build-ts && yarn run build:methodsdoc",
     "build:htmldoc": "yarn clean && typedoc --theme default --out docs/html",
     "build:methodsdoc": "node packages/types/src/scripts/MetadataMdWrapper.js",
     "check": "yarn lint",
     "lint": "tslint --project . && tsc --noEmit --pretty",
-    "clean": "polkadot-dev-clean-build",
-    "postinstall": "polkadot-dev-yarn-only",
+    "clean": "plugnet-dev-clean-build",
+    "postinstall": "plugnet-dev-yarn-only",
     "test": "jest --coverage"
   },
   "devDependencies": {
     "@babel/core": "^7.4.3",
     "@babel/register": "^7.4.0",
     "@babel/runtime": "^7.4.3",
-    "@polkadot/dev": "^0.30.0-beta.1",
+    "@plugnet/dev": "^0.30.1",
     "@polkadot/ts": "^0.1.56",
     "gh-pages": "^2.0.1"
   }
diff --git a/packages/api/test/e2e/promise-tx.spec.js b/packages/api/test/e2e/promise-tx.spec.js
index f68b14ab74..de1ff22fd5 100644
--- a/packages/api/test/e2e/promise-tx.spec.js
+++ b/packages/api/test/e2e/promise-tx.spec.js
@@ -10,7 +10,7 @@ import Api from '../../src/promise';
 import WsProvider from '../../../rpc-provider/src/ws';
 import SingleAccountSigner from "../util/SingleAccountSigner";
 
-describe('e2e transactions', () => {
+describe.skip('e2e transactions', () => {
   const keyring = testingPairs({ type: 'ed25519' });
   let api;
 
diff --git a/packages/types/src/Metadata/v0/Storage.ts b/packages/types/src/Metadata/v0/Storage.ts
index e0803942cc..e588f578af 100644
--- a/packages/types/src/Metadata/v0/Storage.ts
+++ b/packages/types/src/Metadata/v0/Storage.ts
@@ -11,6 +11,7 @@ import Vector from '../../codec/Vector';
 import Bytes from '../../primitive/Bytes';
 import Text from '../../primitive/Text';
 import Type from '../../primitive/Type';
+import { DoubleMapType } from '../v4/Storage';
 
 export class StorageFunctionModifier extends Enum {
   constructor (value?: any) {
@@ -69,14 +70,22 @@ export class MapType extends Struct {
 export class PlainType extends Type {
 }
 
-export class StorageFunctionType extends EnumType<PlainType | MapType> {
+export class StorageFunctionType extends EnumType<PlainType | MapType | DoubleMapType> {
   constructor (value?: any, index?: number) {
     super({
       PlainType,
-      MapType
+      MapType,
+      DoubleMapType
     }, value, index);
   }
 
+  /**
+   * @description `true` if the storage entry is a doublemap
+   */
+  get isDoubleMap (): boolean {
+    return this.toNumber() === 2;
+  }
+
   /**
    * @description `true` if the storage entry is a map
    */
@@ -84,6 +93,13 @@ export class StorageFunctionType extends EnumType<PlainType | MapType> {
     return this.toNumber() === 1;
   }
 
+  /**
+   * @description The value as a double mapped value
+   */
+  get asDoubleMap (): DoubleMapType {
+    return this.value as DoubleMapType;
+  }
+
   /**
    * @description The value as a mapped value
    */
@@ -102,6 +118,10 @@ export class StorageFunctionType extends EnumType<PlainType | MapType> {
    * @description Returns the string representation of the value
    */
   toString (): string {
+    if (this.isDoubleMap) {
+      return this.asDoubleMap.value.toString();
+    }
+
     if (this.isMap) {
       if (this.asMap.isLinked) {
         return `(${this.asMap.value.toString()}, Linkage<${this.asMap.key.toString()}>)`;
diff --git a/packages/types/src/Metadata/v2/Storage.ts b/packages/types/src/Metadata/v2/Storage.ts
index 10e02cd37a..d3ef270051 100644
--- a/packages/types/src/Metadata/v2/Storage.ts
+++ b/packages/types/src/Metadata/v2/Storage.ts
@@ -2,6 +2,8 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
 
+import { DoubleMapType } from './../v4/Storage';
+
 import { AnyNumber } from '../../types';
 
 import EnumType from '../../codec/EnumType';
@@ -50,14 +52,22 @@ export class MapType extends Struct {
   }
 }
 
-export class StorageFunctionType extends EnumType<PlainType | MapType> {
+export class StorageFunctionType extends EnumType<PlainType | MapType | DoubleMapType> {
   constructor (value?: any, index?: number) {
     super({
       PlainType,
-      MapType
+      MapType,
+      DoubleMapType
     }, value, index);
   }
 
+  /**
+   * @description `true` if the storage entry is a doublemap
+   */
+  get isDoubleMap (): boolean {
+    return this.toNumber() === 2;
+  }
+
   /**
    * @description `true` if the storage entry is a map
    */
@@ -65,6 +75,13 @@ export class StorageFunctionType extends EnumType<PlainType | MapType> {
     return this.toNumber() === 1;
   }
 
+  /**
+   * @description The value as a double mapped value
+   */
+  get asDoubleMap (): DoubleMapType {
+    return this.value as DoubleMapType;
+  }
+
   /**
    * @description The value as a mapped value
    */
@@ -83,6 +100,9 @@ export class StorageFunctionType extends EnumType<PlainType | MapType> {
    * @description Returns the string representation of the value
    */
   toString (): string {
+    if (this.isDoubleMap) {
+      return this.asDoubleMap.value.toString();
+    }
     return this.isMap
       ? this.asMap.value.toString()
       : this.asType.toString();