diff --git a/README.md b/README.md
index 72a731424..a500143c5 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,7 @@ The React component `<Playground />` and all middlewares expose the following op
 - `props` (Middlewares & React Component)
   - `endpoint` [`string`](optional) - the GraphQL endpoint url.
   - `subscriptionEndpoint` [`string`](optional) - the GraphQL subscriptions endpoint url.
+  - `subscriptionEndpointConnectionTimeout` [`number`](optional) - the GraphQL subscriptions endpoint connection timeout.
   - `workspaceName` [`string`](optional) - in case you provide a GraphQL Config, you can name your workspace here
   - `config` [`string`](optional) - the JSON of a GraphQL Config. See an example [here](https://github.com/prismagraphql/graphql-playground/blob/master/packages/graphql-playground-react/src/localDevIndex.tsx#L47)
   - `settings` [`ISettings`](optional) - Editor settings in json format as [described here](https://github.com/prismagraphql/graphql-playground#settings)
diff --git a/packages/graphql-playground-html/src/render-playground-page.ts b/packages/graphql-playground-html/src/render-playground-page.ts
index 5d37e98f4..b44c8e0ce 100644
--- a/packages/graphql-playground-html/src/render-playground-page.ts
+++ b/packages/graphql-playground-html/src/render-playground-page.ts
@@ -5,6 +5,7 @@ import getLoadingMarkup from './get-loading-markup'
 export interface MiddlewareOptions {
   endpoint?: string
   subscriptionEndpoint?: string
+  subscriptionEndpointConnectionTimeout?: number
   workspaceName?: string
   env?: any
   config?: any
diff --git a/packages/graphql-playground-react/src/components/Playground.tsx b/packages/graphql-playground-react/src/components/Playground.tsx
index c3fae7b40..8c3bfcf58 100644
--- a/packages/graphql-playground-react/src/components/Playground.tsx
+++ b/packages/graphql-playground-react/src/components/Playground.tsx
@@ -44,6 +44,7 @@ import {
   setLinkCreator,
   schemaFetcher,
   setSubscriptionEndpoint,
+  setSubscriptionEndpointConnectionTimeout,
 } from '../state/sessions/fetchingSagas'
 import { Session } from '../state/sessions/reducers'
 import { getWorkspaceId } from './Playground/util/getWorkspaceId'
@@ -62,6 +63,7 @@ export interface Props {
   endpoint: string
   sessionEndpoint: string
   subscriptionEndpoint?: string
+  subscriptionEndpointConnectionTimeout?: number
   projectId?: string
   shareEnabled?: boolean
   fixedEndpoint?: boolean
@@ -194,6 +196,11 @@ export class Playground extends React.PureComponent<Props & ReduxProps, State> {
     setLinkCreator(props.createApolloLink)
     this.getSchema()
     setSubscriptionEndpoint(props.subscriptionEndpoint)
+    if (props.subscriptionEndpointConnectionTimeout) {
+      setSubscriptionEndpointConnectionTimeout(
+        props.subscriptionEndpointConnectionTimeout,
+      )
+    }
   }
 
   UNSAFE_componentWillMount() {
@@ -262,15 +269,15 @@ export class Playground extends React.PureComponent<Props & ReduxProps, State> {
           props.sessionHeaders && props.sessionHeaders.length > 0
             ? props.sessionHeaders
             : props.headers && Object.keys(props.headers).length > 0
-              ? JSON.stringify(props.headers)
-              : undefined,
+            ? JSON.stringify(props.headers)
+            : undefined,
         credentials: props.settings['request.credentials'],
         useTracingHeader:
           !this.initialSchemaFetch &&
           props.settings['tracing.tracingSupported'],
       }
       const schema = await schemaFetcher.fetch(data)
-      schemaFetcher.subscribe(data, newSchema => {
+      schemaFetcher.subscribe(data, (newSchema) => {
         if (
           data.endpoint === this.props.endpoint ||
           data.endpoint === this.props.sessionEndpoint
@@ -413,24 +420,21 @@ const mapStateToProps = createStructuredSelector({
   sessionEndpoint: getEndpoint,
 })
 
-export default connect(
-  mapStateToProps,
-  {
-    selectTabIndex,
-    selectNextTab,
-    selectPrevTab,
-    newSession,
-    closeSelectedTab,
-    initState,
-    saveSettings,
-    saveConfig,
-    setTracingSupported,
-    injectHeaders,
-    setConfigString,
-    schemaFetchingError,
-    schemaFetchingSuccess,
-  },
-)(Playground)
+export default connect(mapStateToProps, {
+  selectTabIndex,
+  selectNextTab,
+  selectPrevTab,
+  newSession,
+  closeSelectedTab,
+  initState,
+  saveSettings,
+  saveConfig,
+  setTracingSupported,
+  injectHeaders,
+  setConfigString,
+  schemaFetchingError,
+  schemaFetchingSuccess,
+})(Playground)
 
 const PlaygroundContainer = styled.div`
   flex: 1;
diff --git a/packages/graphql-playground-react/src/components/PlaygroundWrapper.tsx b/packages/graphql-playground-react/src/components/PlaygroundWrapper.tsx
index 834549286..4d9c1c7dd 100644
--- a/packages/graphql-playground-react/src/components/PlaygroundWrapper.tsx
+++ b/packages/graphql-playground-react/src/components/PlaygroundWrapper.tsx
@@ -42,6 +42,7 @@ export interface PlaygroundWrapperProps {
   endpoint?: string
   endpointUrl?: string
   subscriptionEndpoint?: string
+  subscriptionEndpointConnectionTimeout?: number
   setTitle?: boolean
   settings?: ISettings
   shareEnabled?: boolean
@@ -199,7 +200,9 @@ class PlaygroundWrapper extends React.Component<
     return endpoint.replace(/^http/, 'ws')
   }
 
-  UNSAFE_componentWillReceiveProps(nextProps: PlaygroundWrapperProps & ReduxProps) {
+  UNSAFE_componentWillReceiveProps(
+    nextProps: PlaygroundWrapperProps & ReduxProps,
+  ) {
     // Reactive props (props that cause a state change upon being changed)
     if (
       nextProps.endpoint !== this.props.endpoint ||
@@ -361,25 +364,27 @@ class PlaygroundWrapper extends React.Component<
           }}
         >
           <App>
-            {this.props.config &&
-              this.state.activeEnv && (
-                <ProjectsSideNav
-                  config={this.props.config}
-                  folderName={this.props.folderName || 'GraphQL App'}
-                  theme={theme}
-                  activeEnv={this.state.activeEnv}
-                  onSelectEnv={this.handleSelectEnv}
-                  onNewWorkspace={this.props.onNewWorkspace}
-                  showNewWorkspace={Boolean(this.props.showNewWorkspace)}
-                  isElectron={Boolean(this.props.isElectron)}
-                  activeProjectName={this.state.activeProjectName}
-                  configPath={this.props.configPath}
-                />
-              )}
+            {this.props.config && this.state.activeEnv && (
+              <ProjectsSideNav
+                config={this.props.config}
+                folderName={this.props.folderName || 'GraphQL App'}
+                theme={theme}
+                activeEnv={this.state.activeEnv}
+                onSelectEnv={this.handleSelectEnv}
+                onNewWorkspace={this.props.onNewWorkspace}
+                showNewWorkspace={Boolean(this.props.showNewWorkspace)}
+                isElectron={Boolean(this.props.isElectron)}
+                activeProjectName={this.state.activeProjectName}
+                configPath={this.props.configPath}
+              />
+            )}
             <Playground
               endpoint={this.state.endpoint}
               shareEnabled={this.props.shareEnabled}
               subscriptionEndpoint={this.state.subscriptionEndpoint}
+              subscriptionEndpointConnectionTimeout={
+                this.props.subscriptionEndpointConnectionTimeout
+              }
               shareUrl={this.state.shareUrl}
               onChangeEndpoint={this.handleChangeEndpoint}
               onChangeSubscriptionsEndpoint={
@@ -413,7 +418,7 @@ class PlaygroundWrapper extends React.Component<
     this.forceUpdate()
   }
 
-  getPlaygroundRef = ref => {
+  getPlaygroundRef = (ref) => {
     this.playground = ref
     if (typeof this.props.getRef === 'function') {
       this.props.getRef(ref)
@@ -450,11 +455,11 @@ class PlaygroundWrapper extends React.Component<
     })
   }
 
-  private handleChangeEndpoint = endpoint => {
+  private handleChangeEndpoint = (endpoint) => {
     this.setState({ endpoint })
   }
 
-  private handleChangeSubscriptionsEndpoint = subscriptionEndpoint => {
+  private handleChangeSubscriptionsEndpoint = (subscriptionEndpoint) => {
     this.setState({ subscriptionEndpoint })
   }
 
@@ -475,7 +480,7 @@ class PlaygroundWrapper extends React.Component<
 
   private async updateSubscriptionsUrl() {
     const candidates = this.getSubscriptionsUrlCandidated(this.state.endpoint)
-    const validCandidate = await find(candidates, candidate =>
+    const validCandidate = await find(candidates, (candidate) =>
       this.wsEndpointValid(candidate),
     )
     if (validCandidate) {
@@ -502,18 +507,18 @@ class PlaygroundWrapper extends React.Component<
   }
 
   private wsEndpointValid(url): Promise<boolean> {
-    return new Promise(resolve => {
+    return new Promise((resolve) => {
       const socket = new WebSocket(url, 'graphql-ws')
-      socket.addEventListener('open', event => {
+      socket.addEventListener('open', (event) => {
         socket.send(JSON.stringify({ type: 'connection_init' }))
       })
-      socket.addEventListener('message', event => {
+      socket.addEventListener('message', (event) => {
         const data = JSON.parse(event.data)
         if (data.type === 'connection_ack') {
           resolve(true)
         }
       })
-      socket.addEventListener('error', event => {
+      socket.addEventListener('error', (event) => {
         resolve(false)
       })
       setTimeout(() => {
@@ -533,10 +538,7 @@ const mapStateToProps = (state, ownProps) => {
   return { theme, settings }
 }
 
-export default connect(
-  mapStateToProps,
-  { injectTabs },
-)(PlaygroundWrapper)
+export default connect(mapStateToProps, { injectTabs })(PlaygroundWrapper)
 
 async function find(
   iterable: any[],
diff --git a/packages/graphql-playground-react/src/state/sessions/fetchingSagas.ts b/packages/graphql-playground-react/src/state/sessions/fetchingSagas.ts
index b45d1fcbb..f160f443d 100644
--- a/packages/graphql-playground-react/src/state/sessions/fetchingSagas.ts
+++ b/packages/graphql-playground-react/src/state/sessions/fetchingSagas.ts
@@ -41,11 +41,16 @@ import { set } from 'immutable'
 
 // tslint:disable
 let subscriptionEndpoint
+let subscriptionTimeout = 20000
 
 export function setSubscriptionEndpoint(endpoint) {
   subscriptionEndpoint = endpoint
 }
 
+export function setSubscriptionEndpointConnectionTimeout(timeout) {
+  subscriptionTimeout = timeout
+}
+
 export interface LinkCreatorProps {
   endpoint: string
   headers?: Headers
@@ -78,7 +83,8 @@ export const defaultLinkCreator = (
   }
 
   const subscriptionClient = new SubscriptionClient(subscriptionEndpoint, {
-    timeout: 20000,
+    minTimeout: subscriptionTimeout,
+    timeout: subscriptionTimeout,
     lazy: true,
     connectionParams,
   })
@@ -86,7 +92,7 @@ export const defaultLinkCreator = (
   const webSocketLink = new WebSocketLink(subscriptionClient)
   return {
     link: ApolloLink.split(
-      operation => isSubscription(operation),
+      (operation) => isSubscription(operation),
       webSocketLink as any,
       httpLink,
     ),
@@ -137,7 +143,7 @@ function* runQuerySaga(action) {
   yield put(setCurrentQueryStartTime(new Date()))
 
   let firstResponse = false
-  const channel = eventChannel(emitter => {
+  const channel = eventChannel((emitter) => {
     let closed = false
     if (subscriptionClient && operationIsSubscription) {
       subscriptionClient.onDisconnected(() => {
@@ -151,10 +157,10 @@ function* runQuerySaga(action) {
       })
     }
     const subscription = execute(link, operation).subscribe({
-      next: function(value) {
+      next: function (value) {
         emitter({ value })
       },
-      error: error => {
+      error: (error) => {
         emitter({ error })
         emitter(END)
       },