diff --git a/packages/app-accounts/src/index.js b/packages/app-accounts/src/index.js
index 9cfcdc5ee0..1d922ead58 100644
--- a/packages/app-accounts/src/index.js
+++ b/packages/app-accounts/src/index.js
@@ -25,8 +25,7 @@ type State = {
 }
 
 // FIXME React-router would probably be the best route, not home-grown
-// flowlint-next-line unclear-type:off
-const Components: { [Actions]: React$ComponentType<any> } = {
+const Components: { [Actions]: React$ComponentType<{}> } = {
   'create': Creator,
   'edit': Editor
 };
diff --git a/packages/app-addresses/src/index.js b/packages/app-addresses/src/index.js
index 92cbc64259..58fcbe45cd 100644
--- a/packages/app-addresses/src/index.js
+++ b/packages/app-addresses/src/index.js
@@ -25,8 +25,7 @@ type State = {
 }
 
 // FIXME React-router would probably be the best route, not home-grown
-// flowlint-next-line unclear-type:off
-const Components: { [Actions]: React$ComponentType<any> } = {
+const Components: { [Actions]: React$ComponentType<{}> } = {
   'create': Creator,
   'edit': Editor
 };
diff --git a/packages/app-explorer/package.json b/packages/app-explorer/package.json
index 8d14d47a65..a7ac992555 100644
--- a/packages/app-explorer/package.json
+++ b/packages/app-explorer/package.json
@@ -12,8 +12,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/primitives-codec": "^0.16.9",
-    "@polkadot/primitives-json": "^0.16.9",
+    "@polkadot/primitives-codec": "^0.16.12",
+    "@polkadot/primitives-json": "^0.16.12",
     "@polkadot/ui-app": "^0.6.8",
     "@polkadot/util-crypto": "^0.22.2"
   }
diff --git a/packages/app-extrinsics/package.json b/packages/app-extrinsics/package.json
index c76fe2e0a8..28264679df 100644
--- a/packages/app-extrinsics/package.json
+++ b/packages/app-extrinsics/package.json
@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/extrinsics-codec": "^0.16.9",
+    "@polkadot/extrinsics-codec": "^0.16.12",
     "@polkadot/ui-app": "^0.6.8",
     "@polkadot/ui-signer": "^0.6.8",
     "react-dropzone": "^4.2.9"
diff --git a/packages/app-rpc/src/index.js b/packages/app-rpc/src/index.js
index 5b9dc8b867..e18c0e299b 100644
--- a/packages/app-rpc/src/index.js
+++ b/packages/app-rpc/src/index.js
@@ -3,7 +3,7 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { I18nProps } from '@polkadot/ui-app/types';
+import type { BareProps } from '@polkadot/ui-app/types';
 import type { QueueProps } from '@polkadot/ui-signer/types';
 
 import './index.css';
@@ -16,7 +16,7 @@ import Signer from '@polkadot/ui-signer';
 import Results from './Results';
 import Selection from './Selection';
 
-type Props = I18nProps & {};
+type Props = BareProps & {};
 
 export default function RpcApp ({ className, style }: Props): React$Node {
   return (
diff --git a/packages/app-storage/src/Selection.js b/packages/app-storage/src/Selection.js
index 29852a57aa..5a610f2e5a 100644
--- a/packages/app-storage/src/Selection.js
+++ b/packages/app-storage/src/Selection.js
@@ -34,10 +34,11 @@ const defaultValue = storage.timestamp.keys.current;
 let id = -1;
 
 class Selection extends React.PureComponent<Props, State> {
-  state: State = ({
+  state: State = {
+    isValid: true,
     key: defaultValue,
     params: []
-  }: $Shape<State>);
+  };
 
   render (): React$Node {
     const { className, style, t } = this.props;
diff --git a/packages/app-toolbox/src/index.js b/packages/app-toolbox/src/index.js
index c2c5d13b1e..986a49058f 100644
--- a/packages/app-toolbox/src/index.js
+++ b/packages/app-toolbox/src/index.js
@@ -26,8 +26,7 @@ type State = {
 }
 
 // FIXME React-router would probably be the best route, not home-grown
-// flowlint-next-line unclear-type:off
-const Components: { [Actions]: React$ComponentType<any> } = {
+const Components: { [Actions]: React$ComponentType<{}> } = {
   'hash': Hash,
   'sign': Sign,
   'verify': Verify
diff --git a/packages/apps/src/SideBar/Item.js b/packages/apps/src/SideBar/Item.js
index a138a2dd13..9aa7456e90 100644
--- a/packages/apps/src/SideBar/Item.js
+++ b/packages/apps/src/SideBar/Item.js
@@ -14,9 +14,11 @@ import { NavLink } from 'react-router-dom';
 import Icon from '@polkadot/ui-app/Icon';
 import Menu from '@polkadot/ui-app/Menu';
 
-type Props = I18nProps & Route & {};
+type Props = I18nProps & {
+  route: Route
+};
 
-export default function Item ({ i18n, icon, isExact, name, path = '', t }: Props): React$Node {
+export default function Item ({ route: { i18n, icon, isExact, name, path = '' }, t }: Props): React$Node {
   return (
     <Menu.Item className='apps--SideBar-Item'>
       <NavLink
diff --git a/packages/apps/src/SideBar/index.js b/packages/apps/src/SideBar/index.js
index 7673d4c942..60639009cb 100644
--- a/packages/apps/src/SideBar/index.js
+++ b/packages/apps/src/SideBar/index.js
@@ -36,8 +36,7 @@ function SideBar ({ className, style, t }: Props): React$Node {
                 <Item
                   key={route.name}
                   t={t}
-                  // flowlint-next-line inexact-spread:off
-                  {...route}
+                  route={route}
                 />
               )
               : (
diff --git a/packages/apps/src/types.js b/packages/apps/src/types.js
index 24cf40ab5e..4c0458ff98 100644
--- a/packages/apps/src/types.js
+++ b/packages/apps/src/types.js
@@ -3,12 +3,12 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
+import type { BareProps } from '@polkadot/ui-app/types';
+
 export type Route = {
-  // flowlint-next-line unclear-type:off
-  Component: React$ComponentType<any>,
+  Component: React$ComponentType<BareProps>,
   i18n: I18Next$Translate$Config,
-  // flowlint-next-line unclear-type:off
-  icon: React$ComponentType<any> | string,
+  icon: string,
   isExact: boolean,
   isHidden: boolean,
   name: string,
diff --git a/packages/ui-app/package.json b/packages/ui-app/package.json
index e7c47a7841..3232418c5f 100644
--- a/packages/ui-app/package.json
+++ b/packages/ui-app/package.json
@@ -12,11 +12,11 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/extrinsics-substrate": "^0.16.9",
-    "@polkadot/storage-substrate": "^0.16.9",
+    "@polkadot/extrinsics-substrate": "^0.16.12",
+    "@polkadot/storage-substrate": "^0.16.12",
     "@polkadot/ui-keyring": "^0.6.8",
-    "@polkadot/ui-react": "^0.13.10",
-    "@polkadot/ui-react-rx": "^0.13.10",
+    "@polkadot/ui-react": "^0.13.13",
+    "@polkadot/ui-react-rx": "^0.13.13",
     "i18next": "^11.1.1",
     "i18next-browser-languagedetector": "^2.2.0",
     "i18next-xhr-backend": "^1.5.1",
diff --git a/packages/ui-app/src/Dropdown.js b/packages/ui-app/src/Dropdown.js
index e74f87b222..5924efce83 100644
--- a/packages/ui-app/src/Dropdown.js
+++ b/packages/ui-app/src/Dropdown.js
@@ -11,17 +11,15 @@ import SUIDropdown from 'semantic-ui-react/dist/es/modules/Dropdown';
 import classes from './util/classes';
 import Labelled from './Labelled';
 
-type Props = BareProps & {
+type Props<Option> = BareProps & {
   defaultValue?: mixed,
   isDisabled?: boolean,
   isError?: boolean,
   label?: React$Node,
   // flowlint-next-line unclear-type:off
   onChange: (value: any) => void,
-  // flowlint-next-line unclear-type:off
-  onSearch?: (filteredOptions: Array<any>, query: string) => Array<any>,
-  // flowlint-next-line unclear-type:off
-  options: Array<any>,
+  onSearch?: (filteredOptions: Array<Option>, query: string) => Array<Option>,
+  options: Array<Option>,
   // flowlint-next-line unclear-type:off
   transform?: (value: any) => any,
   value?: mixed,
@@ -29,11 +27,10 @@ type Props = BareProps & {
 };
 
 type SUIEvent = {
-  // flowlint-next-line unclear-type:off
-  value: any
+  value: string
 };
 
-export default class Dropdown extends React.PureComponent<Props> {
+export default class Dropdown<Option> extends React.PureComponent<Props<Option>> {
   render (): React$Node {
     const { className, defaultValue, isDisabled, isError, label, onSearch, options, style, withLabel, value } = this.props;
 
diff --git a/packages/ui-app/src/InputAddress/addressToAddress.js b/packages/ui-app/src/InputAddress/addressToAddress.js
index 9dbf86e510..67c3852cad 100644
--- a/packages/ui-app/src/InputAddress/addressToAddress.js
+++ b/packages/ui-app/src/InputAddress/addressToAddress.js
@@ -7,14 +7,15 @@ import addressDecode from '@polkadot/util-keyring/address/decode';
 import addressEncode from '@polkadot/util-keyring/address/encode';
 
 export default function addressToAddress (value?: string | Uint8Array): ?string {
-  // flowlint-next-line sketchy-null-string:off
-  if (value) {
-    try {
-      return addressEncode(
-        addressDecode(value)
-      );
-    } catch (error) {
-      console.error('Unable to encode address', value);
-    }
+  if (value === undefined) {
+    return;
+  }
+
+  try {
+    return addressEncode(
+      addressDecode(value)
+    );
+  } catch (error) {
+    console.error('Unable to encode address', value);
   }
 }
diff --git a/packages/ui-app/src/InputAddress/index.js b/packages/ui-app/src/InputAddress/index.js
index 4a43b52ca7..f2dd7bd2be 100644
--- a/packages/ui-app/src/InputAddress/index.js
+++ b/packages/ui-app/src/InputAddress/index.js
@@ -26,13 +26,11 @@ type Props = BareProps & {
   label?: string,
   onChange: (value: Uint8Array) => void,
   type?: KeyringOption$Type,
-  value?: string | Uint8Array,
   withLabel?: boolean
 };
 
 type State = {
   defaultValue: ?string;
-  value: ?string;
 }
 
 const RECENT_KEY = 'header-recent';
@@ -51,20 +49,13 @@ export default class InputAddress extends React.Component<Props, State> {
     super(props);
 
     this.state = {
-      defaultValue: addressToAddress(props.defaultValue),
-      value: addressToAddress(props.value)
-    };
-  }
-
-  static getDerivedStateFromProps ({ value }: Props): $Shape<State> {
-    return {
-      value: addressToAddress(value)
+      defaultValue: addressToAddress(props.defaultValue)
     };
   }
 
   render (): React$Node {
     const { className, hideAddress = false, isError, label, onChange, style, type = 'all', withLabel } = this.props;
-    const { defaultValue, value } = this.state;
+    const { defaultValue } = this.state;
     const options = keyring.getOptions(type);
 
     return (
@@ -78,7 +69,6 @@ export default class InputAddress extends React.Component<Props, State> {
         options={options}
         style={style}
         transform={transform}
-        value={value}
         withLabel={withLabel}
       />
     );
@@ -88,12 +78,10 @@ export default class InputAddress extends React.Component<Props, State> {
     const { isInput = true } = this.props;
     const queryLower = query.toLowerCase();
     const matches = filteredOptions.filter((item) => {
-      // $FlowFixMe yes, this is how we check for Element (??!)
-      if (!item || !item.value) {
+      if (item.value === null) {
         return true;
       }
 
-      // $FLowFixMe we should now have value elements
       const { name, value } = item;
       const hasMatch = name.toLowerCase().indexOf(queryLower) !== -1 ||
       value.toLowerCase().indexOf(queryLower) !== -1;
@@ -101,10 +89,8 @@ export default class InputAddress extends React.Component<Props, State> {
       return hasMatch;
     });
 
-    // $FlowFixMe yes, this is how we check for Element
-    const valueMatches = matches.filter((item) => item.value);
+    const valueMatches = matches.filter((item) => item.value !== null);
 
-    // see if we should add a new item, i.e. no valid address found
     if (isInput && valueMatches.length === 0) {
       const publicKey = transform(query);
 
@@ -122,17 +108,11 @@ export default class InputAddress extends React.Component<Props, State> {
     }
 
     return matches.filter((item, index) => {
-      if (!item) {
-        return false;
-      }
-
       const isLast = index === matches.length - 1;
       const nextItem = matches[index + 1];
-      // $FlowFixMe yes, this is how we check for Element
       const hasNext = nextItem && nextItem.value;
 
-      // $FlowFixMe yes, this is how we check for Element
-      if (item.value || (!isLast && hasNext)) {
+      if (item.value !== null || (!isLast && hasNext)) {
         return true;
       }
 
diff --git a/packages/ui-app/src/Params/index.js b/packages/ui-app/src/Params/index.js
index 0593b01420..cd75149ec5 100644
--- a/packages/ui-app/src/Params/index.js
+++ b/packages/ui-app/src/Params/index.js
@@ -16,33 +16,31 @@ import translate from '../translate';
 import Param from './Param';
 import createValues from './values';
 
-type Props = I18nProps & {
-  // flowlint-next-line unclear-type:off
-  item: Section$Item<any>,
+type Props<SectionItem> = I18nProps & {
+  item: SectionItem,
   onChange: (value: RawParams) => void,
   overrides?: ComponentMap
 };
 
-type State = {
-  // flowlint-next-line unclear-type:off
-  item: Section$Item<any>,
+type State<SectionItem> = {
+  item: SectionItem,
   handlers: Array<RawParam$OnChange>,
   onChangeParam: (at: number, next: RawParam) => void,
   values: RawParams
 };
 
-class Params extends React.PureComponent<Props, State> {
-  state: State;
+class Params<T, SectionItem: Section$Item<T>> extends React.PureComponent<Props<SectionItem>, State<SectionItem>> {
+  state: State<SectionItem>;
 
-  constructor (props: Props) {
+  constructor (props: Props<SectionItem>) {
     super(props);
 
     this.state = ({
       onChangeParam: this.onChangeParam
-    }: $Shape<State>);
+    }: $Shape<State<SectionItem>>);
   }
 
-  static getDerivedStateFromProps ({ item }: Props, { item: { name, section } = {}, onChangeParam }: State): $Shape<State> | null {
+  static getDerivedStateFromProps ({ item }: Props<SectionItem>, { item: { name, section } = {}, onChangeParam }: State<SectionItem>): $Shape<State<SectionItem>> | null {
     if (name === item.name && section === item.section) {
       return null;
     }
@@ -62,7 +60,7 @@ class Params extends React.PureComponent<Props, State> {
     };
   }
 
-  componentDidUpdate (prevProps: Props, prevState: State) {
+  componentDidUpdate (prevProps: Props<SectionItem>, prevState: State<SectionItem>) {
     const { onChange } = this.props;
     const { values } = this.state;
 
@@ -102,7 +100,7 @@ class Params extends React.PureComponent<Props, State> {
 
   onChangeParam = (at: number, { isValid = false, value }: RawParam): void => {
     this.setState(
-      (prevState: State): $Shape<State> => ({
+      (prevState: State<SectionItem>): $Shape<State<SectionItem>> => ({
         values: prevState.values.map((prev, index) =>
           index !== at
             ? prev
diff --git a/packages/ui-app/src/styles/semantic.css b/packages/ui-app/src/styles/semantic.css
index f2b87b9b74..aca9495fdb 100644
--- a/packages/ui-app/src/styles/semantic.css
+++ b/packages/ui-app/src/styles/semantic.css
@@ -23,6 +23,16 @@
   min-height: 1em;
 }
 
+.ui.dropdown .menu > .item.header.disabled {
+  margin: 1em 0 0 0;
+  opacity: 1;
+}
+
+.ui.dropdown .menu > .item.header.disabled:hover,
+.ui.dropdown .menu > .item.header.disabled.selected {
+  background: white;
+}
+
 .ui.input {
   /* from .ui.fluid.input */
   display: flex;
diff --git a/packages/ui-app/src/types.js b/packages/ui-app/src/types.js
index 1c2ae96de9..a46f61d367 100644
--- a/packages/ui-app/src/types.js
+++ b/packages/ui-app/src/types.js
@@ -8,7 +8,7 @@ import type { RxApiInterface } from '@polkadot/api-rx/types';
 export type BareProps = {
   className?: string,
   style?: {
-    [string]: string
+    [string]: mixed
   }
 };
 
diff --git a/packages/ui-keyring/package.json b/packages/ui-keyring/package.json
index 2aa3934681..fb0226675e 100644
--- a/packages/ui-keyring/package.json
+++ b/packages/ui-keyring/package.json
@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/ui-react": "^0.13.10",
+    "@polkadot/ui-react": "^0.13.13",
     "@polkadot/util-keyring": "^0.22.2",
     "store": "^2.0.12"
   },
diff --git a/packages/ui-keyring/src/address/metaRecent.js b/packages/ui-keyring/src/address/metaRecent.js
index 021c0d229a..5254585d43 100644
--- a/packages/ui-keyring/src/address/metaRecent.js
+++ b/packages/ui-keyring/src/address/metaRecent.js
@@ -11,6 +11,8 @@ import { addressKey } from '../defaults';
 import createOptions from '../options';
 
 export default function saveRecent (state: State, address: string): KeyringOption {
+  console.log('saveRecent', address);
+
   if (!state.available[address]) {
     const json = {
       address,
diff --git a/packages/ui-keyring/src/options/header.js b/packages/ui-keyring/src/options/header.js
index 61d05bcca1..cde3d7e444 100644
--- a/packages/ui-keyring/src/options/header.js
+++ b/packages/ui-keyring/src/options/header.js
@@ -3,14 +3,14 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import React from 'react';
-import Dropdown from 'semantic-ui-react/dist/es/modules/Dropdown';
+import type { KeyringOption } from '../types';
 
-// flowlint-next-line unclear-type:off
-export default function createHeader (text: string): React$Element<any> {
-  return (
-    <Dropdown.Header key={`header-${text.toLowerCase()}`}>
-      {text}
-    </Dropdown.Header>
-  );
+export default function createHeader (name: string): KeyringOption {
+  return {
+    className: 'header disabled',
+    name,
+    key: `header-${name.toLowerCase()}`,
+    text: name,
+    value: null
+  };
 }
diff --git a/packages/ui-keyring/src/options/item.js b/packages/ui-keyring/src/options/item.js
index b8b715599a..d270ef0c49 100644
--- a/packages/ui-keyring/src/options/item.js
+++ b/packages/ui-keyring/src/options/item.js
@@ -3,18 +3,18 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { KeyringOption, KeyringOption$Data } from '../types';
+import type { KeyringOption } from '../types';
 
 import React from 'react';
 
 import KeyPair from './KeyPair';
 
-export default function createItem (address: string, name?: string, data?: KeyringOption$Data = {}): KeyringOption {
-  // flowlint-next-line sketchy-null-string:off
-  name = name || `${address.slice(0, 16)}…`;
+export default function createItem (address: string, _name?: string): KeyringOption {
+  const name = _name === undefined
+    ? `${address.slice(0, 16)}…`
+    : _name;
 
   return {
-    ...data,
     key: address,
     name,
     text: (
diff --git a/packages/ui-keyring/src/types.js b/packages/ui-keyring/src/types.js
index 131d5febcd..2036ee2091 100644
--- a/packages/ui-keyring/src/types.js
+++ b/packages/ui-keyring/src/types.js
@@ -7,27 +7,17 @@ import type { KeyringInstance as BaseKeyringInstance, KeyringPair, KeyringPair$M
 
 export type KeyringOption$Type = 'account' | 'address' | 'all' | 'recent' | 'testing';
 
-export type KeyringOption$Data = {
-  'data-is-account'?: boolean,
-  'data-is-recent'?: boolean,
-  'data-is-testing'?: boolean,
-  'data-when-created'?: number,
-  'data-when-edited'?: number,
-  'data-when-used'?: number
-}
-
-export type KeyringOption = KeyringOption$Data & {
+export type KeyringOption = {
   className?: string,
   disabled?: boolean,
   content?: React$Node | string,
   key: string | null,
   name: string,
   text: React$Node | string,
-  value: string
+  value: string | null
 };
 
-// flowlint-next-line unclear-type:off
-export type KeyringOptions = Array<KeyringOption | React$Element<any>>;
+export type KeyringOptions = Array<KeyringOption>;
 
 export type KeyringJson$Meta = {
   isRecent?: boolean,
diff --git a/packages/ui-signer/package.json b/packages/ui-signer/package.json
index a4b91862cd..6b779a9268 100644
--- a/packages/ui-signer/package.json
+++ b/packages/ui-signer/package.json
@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/extrinsics": "^0.16.9",
+    "@polkadot/extrinsics": "^0.16.12",
     "@polkadot/ui-app": "^0.6.8",
     "@polkadot/ui-keyring": "^0.6.8"
   },
diff --git a/packages/ui-signer/src/Modal.js b/packages/ui-signer/src/Modal.js
index 9ac1eb0e35..e4f7f2f84e 100644
--- a/packages/ui-signer/src/Modal.js
+++ b/packages/ui-signer/src/Modal.js
@@ -49,7 +49,7 @@ class Signer extends React.PureComponent<Props, State> {
     };
   }
 
-  static getDerivedStateFromProps ({ queue }: Props, { currentItem, password, unlockError }: State): $Shape<State> {
+  static getDerivedStateFromProps ({ queue }: Props, { currentItem, password, unlockError }: State): State {
     const nextItem = queue.find(({ status }) =>
       status === 'queued'
     );
diff --git a/packages/ui-signer/src/Queue.js b/packages/ui-signer/src/Queue.js
index 32116ecd43..7fb2a08614 100644
--- a/packages/ui-signer/src/Queue.js
+++ b/packages/ui-signer/src/Queue.js
@@ -48,9 +48,12 @@ export default class Queue extends React.Component<Props, State> {
           item.id === id
             ? {
               ...item,
-              error: error || item.error,
-              // flowlint-next-line sketchy-null-mixed:off
-              result: result || item.result,
+              error: error === undefined
+                ? item.error
+                : error,
+              result: result === undefined
+                ? item.result
+                : result,
               status
             }
             : item
diff --git a/packages/ui-signer/src/Unlock.js b/packages/ui-signer/src/Unlock.js
index 67d0d724c4..6bb52368d7 100644
--- a/packages/ui-signer/src/Unlock.js
+++ b/packages/ui-signer/src/Unlock.js
@@ -17,7 +17,6 @@ import translate from './translate';
 type Props = I18nProps & {
   error?: string,
   onChange: (password: string) => void,
-  publicKey: Uint8Array,
   password: string,
   value: Uint8Array,
 }
diff --git a/yarn.lock b/yarn.lock
index 171bf1793c..f67b19bc64 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -719,21 +719,22 @@
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.0.2.tgz#d056b68999769728a1cff8d643bc59eb6f0be436"
 
-"@polkadot/api-format@^0.12.10":
-  version "0.12.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-format/-/api-format-0.12.10.tgz#ec217f251a4988f0ad4558773a9fd03d75348d31"
+"@polkadot/api-format@^0.12.12":
+  version "0.12.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-format/-/api-format-0.12.12.tgz#46213ab7c6a1f67036bcd485f4d23e36fefe3f97"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/jsonrpc" "^0.16.9"
-    "@polkadot/primitives-json" "^0.16.9"
+    "@polkadot/jsonrpc" "^0.16.12"
+    "@polkadot/primitives-json" "^0.16.12"
     "@polkadot/util" "^0.22.2"
+    "@polkadot/util-keyring" "^0.22.2"
 
-"@polkadot/api-provider@^0.12.10":
-  version "0.12.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-provider/-/api-provider-0.12.10.tgz#ca641edad479a130bdad145da92f5f89b09faded"
+"@polkadot/api-provider@^0.12.12":
+  version "0.12.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-provider/-/api-provider-0.12.12.tgz#67c0e2c479fb6f8eb1a53034d2c8cf98a45b8fb8"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/storage-substrate" "^0.16.9"
+    "@polkadot/storage-substrate" "^0.16.12"
     "@polkadot/util" "^0.22.2"
     "@polkadot/util-crypto" "^0.22.2"
     "@polkadot/util-keyring" "^0.22.2"
@@ -741,24 +742,24 @@
     isomorphic-fetch "^2.2.1"
     websocket "^1.0.25"
 
-"@polkadot/api-rx@^0.12.10":
-  version "0.12.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-rx/-/api-rx-0.12.10.tgz#d15a58084d3ea7b8a7d51aa674aed4973b6f5071"
+"@polkadot/api-rx@^0.12.12":
+  version "0.12.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-rx/-/api-rx-0.12.12.tgz#9003a56efb8cc99b11fab948094370832c352948"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/api" "^0.12.10"
-    "@polkadot/api-provider" "^0.12.10"
+    "@polkadot/api" "^0.12.12"
+    "@polkadot/api-provider" "^0.12.12"
     rxjs "^5.5.10"
 
-"@polkadot/api@^0.12.10":
-  version "0.12.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.12.10.tgz#04ebcccfa5ae0947eb664940c2fd286836a583d2"
+"@polkadot/api@^0.12.12":
+  version "0.12.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.12.12.tgz#f51a315322f6d25f931cb7becf7fb46eb717f557"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/api-format" "^0.12.10"
-    "@polkadot/api-provider" "^0.12.10"
-    "@polkadot/jsonrpc" "^0.16.9"
-    "@polkadot/params" "^0.16.9"
+    "@polkadot/api-format" "^0.12.12"
+    "@polkadot/api-provider" "^0.12.12"
+    "@polkadot/jsonrpc" "^0.16.12"
+    "@polkadot/params" "^0.16.12"
     "@polkadot/util" "^0.22.2"
 
 "@polkadot/dev-react@^0.19.11":
@@ -816,135 +817,136 @@
     mkdirp "^0.5.1"
     rimraf "^2.6.2"
 
-"@polkadot/extrinsics-codec@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-codec/-/extrinsics-codec-0.16.9.tgz#864197e06c5c4d1b84472d8dc152e76d685ae85a"
+"@polkadot/extrinsics-codec@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-codec/-/extrinsics-codec-0.16.12.tgz#0e394354a92088f0a2c1dcb088d69b157c7a45fa"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/extrinsics" "^0.16.9"
-    "@polkadot/params" "^0.16.9"
+    "@polkadot/extrinsics" "^0.16.12"
+    "@polkadot/params" "^0.16.12"
     "@polkadot/util" "^0.22.2"
     bn.js "^4.11.8"
 
-"@polkadot/extrinsics-substrate@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-substrate/-/extrinsics-substrate-0.16.9.tgz#ad5ce5476f08a8e8122759547d6f1b58a13b926e"
+"@polkadot/extrinsics-substrate@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-substrate/-/extrinsics-substrate-0.16.12.tgz#acb202bcf3915783568797d604e5372efe094db3"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/extrinsics" "^0.16.9"
+    "@polkadot/extrinsics" "^0.16.12"
 
-"@polkadot/extrinsics@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics/-/extrinsics-0.16.9.tgz#61bfbd74c3a4b63fa5301e31f1de7c136818a6a9"
+"@polkadot/extrinsics@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics/-/extrinsics-0.16.12.tgz#d7583bdf8b76afa9a58b8bc6274a1afcc8042511"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/params" "^0.16.9"
-    "@polkadot/primitives" "^0.16.9"
+    "@polkadot/params" "^0.16.12"
+    "@polkadot/primitives" "^0.16.12"
     "@polkadot/util" "^0.22.2"
 
-"@polkadot/jsonrpc@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.16.9.tgz#160f7d0c9d1e0f8e728abd29af10c90ef111e36a"
+"@polkadot/jsonrpc@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.16.12.tgz#0fa923ed8736d31f08419bff04bb5e6f52ce7eef"
   dependencies:
-    "@polkadot/params" "^0.16.9"
+    "@polkadot/params" "^0.16.12"
     babel-runtime "^6.26.0"
 
-"@polkadot/params@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/params/-/params-0.16.9.tgz#f68b6061b646dfe50e274f9adbe3862f7cb79615"
+"@polkadot/params@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/params/-/params-0.16.12.tgz#2e5512e3d890d9d9b5bfd6a44539f7ef32a369ae"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/extrinsics" "^0.16.9"
-    "@polkadot/extrinsics-substrate" "^0.16.9"
-    "@polkadot/primitives" "^0.16.9"
+    "@polkadot/extrinsics" "^0.16.12"
+    "@polkadot/extrinsics-substrate" "^0.16.12"
+    "@polkadot/primitives" "^0.16.12"
     "@polkadot/util" "^0.22.2"
 
-"@polkadot/primitives-builder@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-builder/-/primitives-builder-0.16.9.tgz#c835a763ad9af426112fbea16d8d1eeffe5ee162"
+"@polkadot/primitives-builder@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-builder/-/primitives-builder-0.16.12.tgz#413d71443bff6fa611e7651390003bfbac728961"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.16.9"
-    "@polkadot/primitives-codec" "^0.16.9"
+    "@polkadot/primitives" "^0.16.12"
+    "@polkadot/primitives-codec" "^0.16.12"
     "@polkadot/util" "^0.22.2"
     "@polkadot/util-crypto" "^0.22.2"
     "@polkadot/util-triehash" "^0.22.2"
 
-"@polkadot/primitives-codec@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-codec/-/primitives-codec-0.16.9.tgz#f685a1d24c99da56e4176c2168df9ad3efb02fba"
+"@polkadot/primitives-codec@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-codec/-/primitives-codec-0.16.12.tgz#18bf1f2eb44689a38e9f7f91ed8f94a30c461a71"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.16.9"
-    "@polkadot/primitives-builder" "^0.16.9"
-    "@polkadot/primitives-rlp" "^0.16.9"
+    "@polkadot/primitives" "^0.16.12"
+    "@polkadot/primitives-builder" "^0.16.12"
+    "@polkadot/primitives-rlp" "^0.16.12"
     "@polkadot/util" "^0.22.2"
     "@polkadot/util-keyring" "^0.22.2"
 
-"@polkadot/primitives-json@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-json/-/primitives-json-0.16.9.tgz#a18171833c31f1b0b971438c9ef29416d7cbd47c"
+"@polkadot/primitives-json@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-json/-/primitives-json-0.16.12.tgz#59e971ffa3888bbbe9ec7c60180d2e6b91378355"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.16.9"
-    "@polkadot/primitives-builder" "^0.16.9"
+    "@polkadot/primitives" "^0.16.12"
+    "@polkadot/primitives-builder" "^0.16.12"
     "@polkadot/util" "^0.22.2"
 
-"@polkadot/primitives-rlp@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-rlp/-/primitives-rlp-0.16.9.tgz#9e306936da7fc932c702f0ba456110c80d77ebe3"
+"@polkadot/primitives-rlp@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-rlp/-/primitives-rlp-0.16.12.tgz#5f1a23f748280970d5b9ac1950ec2d273c9b392b"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.16.9"
-    "@polkadot/primitives-builder" "^0.16.9"
+    "@polkadot/primitives" "^0.16.12"
+    "@polkadot/primitives-builder" "^0.16.12"
     "@polkadot/util" "^0.22.2"
     "@polkadot/util-crypto" "^0.22.2"
 
-"@polkadot/primitives@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives/-/primitives-0.16.9.tgz#20d70ecc29698e45cb0c1616afd7d5ccfb543a0c"
+"@polkadot/primitives@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives/-/primitives-0.16.12.tgz#761caa7b741d73d65a8ed6311d59a1994f914316"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
     "@polkadot/util" "^0.22.2"
 
-"@polkadot/storage-substrate@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/storage-substrate/-/storage-substrate-0.16.9.tgz#151a6ea4215b63bc54b130188839839e211baebe"
+"@polkadot/storage-substrate@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/storage-substrate/-/storage-substrate-0.16.12.tgz#6d43c3877af7f4e18387252298fd447e98e1af15"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/storage" "^0.16.9"
+    "@polkadot/storage" "^0.16.12"
     "@polkadot/util" "^0.22.2"
 
-"@polkadot/storage@^0.16.9":
-  version "0.16.9"
-  resolved "https://registry.yarnpkg.com/@polkadot/storage/-/storage-0.16.9.tgz#4f08c7b36c95bfccf925e72ca15765a0e3db5a13"
+"@polkadot/storage@^0.16.12":
+  version "0.16.12"
+  resolved "https://registry.yarnpkg.com/@polkadot/storage/-/storage-0.16.12.tgz#38a2f439e970a7d156bd441fedbc41cdc7e136fb"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/params" "^0.16.9"
-    "@polkadot/primitives" "^0.16.9"
+    "@polkadot/params" "^0.16.12"
+    "@polkadot/primitives" "^0.16.12"
     "@polkadot/util" "^0.22.2"
+    "@polkadot/util-keyring" "^0.22.2"
 
-"@polkadot/ui-identicon@^0.13.10":
-  version "0.13.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-identicon/-/ui-identicon-0.13.10.tgz#97caacfb95dbc65bafb61e12227b705e9a1d5e55"
+"@polkadot/ui-identicon@^0.13.13":
+  version "0.13.13"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-identicon/-/ui-identicon-0.13.13.tgz#cf17c9c632beef53e5deb9efc2a9df6edaacbffe"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
     color "^3.0.0"
 
-"@polkadot/ui-react-rx@^0.13.10":
-  version "0.13.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-react-rx/-/ui-react-rx-0.13.10.tgz#28b0940f684680f2e8f188c11c5c3d44e43627a3"
+"@polkadot/ui-react-rx@^0.13.13":
+  version "0.13.13"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-react-rx/-/ui-react-rx-0.13.13.tgz#33a060f348ed0a07dfe28b3ddf08c6dcd0bf56ca"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/api-rx" "^0.12.10"
-    "@polkadot/storage-substrate" "^0.16.9"
+    "@polkadot/api-rx" "^0.12.12"
+    "@polkadot/storage-substrate" "^0.16.12"
 
-"@polkadot/ui-react@^0.13.10":
-  version "0.13.10"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-react/-/ui-react-0.13.10.tgz#8e1f34208bf59e9eb669a7110e47c702369d5884"
+"@polkadot/ui-react@^0.13.13":
+  version "0.13.13"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-react/-/ui-react-0.13.13.tgz#233da9b2753c32c447fc944361201065c004ccc8"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/ui-identicon" "^0.13.10"
+    "@polkadot/ui-identicon" "^0.13.13"
 
 "@polkadot/util-crypto@^0.22.2":
   version "0.22.2"