diff --git a/src/actions/pause.js b/src/actions/pause.js
index 50e4b15a17..22a565d863 100644
--- a/src/actions/pause.js
+++ b/src/actions/pause.js
@@ -44,13 +44,17 @@ export function resumed() {
 export function paused(pauseInfo: Pause) {
   return async function({ dispatch, getState, client, sourceMaps }: ThunkArgs) {
     let { frames, why, loadedObjects } = pauseInfo;
+
     frames = await updateFrameLocations(frames, sourceMaps);
     const frame = frames[0];
 
+    const scopes = await client.getFrameScopes(frame);
+
     dispatch({
       type: "PAUSED",
       pauseInfo: { why, frame, frames },
       frames: frames,
+      scopes,
       selectedFrameId: frame.id,
       loadedObjects: loadedObjects || []
     });
@@ -184,14 +188,18 @@ export function breakOnNext() {
  * @static
  */
 export function selectFrame(frame: Frame) {
-  return ({ dispatch }: ThunkArgs) => {
+  return async ({ dispatch, client }: ThunkArgs) => {
     dispatch(evaluateExpressions(frame.id));
     dispatch(
       selectSource(frame.location.sourceId, { line: frame.location.line })
     );
+
+    const scopes = await client.getFrameScopes(frame);
+
     dispatch({
       type: "SELECT_FRAME",
-      frame
+      frame,
+      scopes
     });
   };
 }
diff --git a/src/actions/tests/ast.js b/src/actions/tests/ast.js
index f8f8b1d595..14cb65e6a9 100644
--- a/src/actions/tests/ast.js
+++ b/src/actions/tests/ast.js
@@ -16,6 +16,9 @@ const threadClient = {
       })
     );
   },
+  getFrameScopes: function() {
+    return Promise.resolve({});
+  },
   evaluate: function(expression) {
     return new Promise((resolve, reject) =>
       resolve({
diff --git a/src/actions/types.js b/src/actions/types.js
index 9756a7124a..6ff31fb966 100644
--- a/src/actions/types.js
+++ b/src/actions/types.js
@@ -9,6 +9,7 @@ import type {
   GeneratedLocation,
   SourceText,
   Frame,
+  Scope,
   Why
 } from "debugger-html";
 
@@ -167,6 +168,7 @@ type PauseAction =
         frame: Frame,
         isInterrupted?: boolean
       },
+      scopes: Scope[],
       frames: Frame[],
       selectedFrameId: string,
       loadedObjects: LoadedObject[]
@@ -177,7 +179,7 @@ type PauseAction =
       shouldIgnoreCaughtExceptions: boolean
     }
   | { type: "COMMAND", value: void }
-  | { type: "SELECT_FRAME", frame: Frame }
+  | { type: "SELECT_FRAME", frame: Frame, scopes: Scope[] }
   | {
       type: "LOAD_OBJECT_PROPERTIES",
       objectId: string,
diff --git a/src/client/firefox/commands.js b/src/client/firefox/commands.js
index f886401a4c..ca78368d91 100644
--- a/src/client/firefox/commands.js
+++ b/src/client/firefox/commands.js
@@ -3,6 +3,7 @@
 import type {
   BreakpointId,
   BreakpointResult,
+  Frame,
   FrameId,
   ActorId,
   Location,
@@ -193,6 +194,14 @@ function getProperties(grip: Grip): Promise<*> {
   });
 }
 
+async function getFrameScopes(frame: Frame): Promise<*> {
+  if (frame.scope) {
+    return frame.scope;
+  }
+
+  return threadClient.getEnvironment(frame.id);
+}
+
 function pauseOnExceptions(
   shouldPauseOnExceptions: boolean,
   shouldIgnoreCaughtExceptions: boolean
@@ -260,6 +269,7 @@ const clientCommands = {
   navigate,
   reload,
   getProperties,
+  getFrameScopes,
   pauseOnExceptions,
   prettyPrint,
   disablePrettyPrint,
diff --git a/src/client/firefox/create.js b/src/client/firefox/create.js
index 567987569e..83152263d7 100644
--- a/src/client/firefox/create.js
+++ b/src/client/firefox/create.js
@@ -31,7 +31,7 @@ function createFrame(frame: FramePacket): Frame {
   };
 }
 
-function createSource(source: SourcePayload): Source {
+export function createSource(source: SourcePayload): Source {
   return {
     id: source.actor,
     url: source.url,
@@ -41,7 +41,10 @@ function createSource(source: SourcePayload): Source {
   };
 }
 
-function createPause(packet: PausedPacket, response: FramesResponse): any {
+export function createPause(
+  packet: PausedPacket,
+  response: FramesResponse
+): any {
   // NOTE: useful when the debugger is already paused
   const frame = packet.frame || response.frames[0];
 
@@ -50,9 +53,3 @@ function createPause(packet: PausedPacket, response: FramesResponse): any {
     frames: response.frames.map(createFrame)
   });
 }
-
-module.exports = {
-  createFrame,
-  createSource,
-  createPause
-};
diff --git a/src/client/firefox/types.js b/src/client/firefox/types.js
index 0c36fca817..4f307b5787 100644
--- a/src/client/firefox/types.js
+++ b/src/client/firefox/types.js
@@ -338,6 +338,7 @@ export type ThreadClient = {
   interrupt: () => Promise<*>,
   eventListeners: () => Promise<*>,
   getFrames: (number, number) => FramesResponse,
+  getEnvironment: () => Promise<*>,
   addListener: (string, Function) => void,
   getSources: () => Promise<SourcesPacket>,
   reconfigure: ({ observeAsmJS: boolean }) => Promise<*>,
diff --git a/src/components/Editor/Tabs.js b/src/components/Editor/Tabs.js
index 2f150d3e31..41fda73e17 100644
--- a/src/components/Editor/Tabs.js
+++ b/src/components/Editor/Tabs.js
@@ -93,7 +93,7 @@ class SourceTabs extends PureComponent {
     selectedSource: SourceRecord,
     selectSource: (string, ?Object) => any,
     closeTab: string => any,
-    closeTabs: List<string> => any,
+    closeTabs: (List<string>) => any,
     toggleProjectSearch: () => any,
     togglePrettyPrint: string => any,
     togglePaneCollapse: () => any,
diff --git a/src/components/Editor/index.js b/src/components/Editor/index.js
index d85e265264..5633725fc7 100644
--- a/src/components/Editor/index.js
+++ b/src/components/Editor/index.js
@@ -910,7 +910,8 @@ Editor.contextTypes = {
 
 const expressionsSel = state => state.expressions.expressions;
 const getExpressionSel = createSelector(expressionsSel, expressions => input =>
-  expressions.find(exp => exp.input == input));
+  expressions.find(exp => exp.input == input)
+);
 
 export default connect(
   state => {
diff --git a/src/components/SecondaryPanes/Scopes.js b/src/components/SecondaryPanes/Scopes.js
index 7dea16056f..5c8fe825a1 100644
--- a/src/components/SecondaryPanes/Scopes.js
+++ b/src/components/SecondaryPanes/Scopes.js
@@ -3,7 +3,12 @@ import { DOM as dom, PropTypes, PureComponent, createFactory } from "react";
 import { bindActionCreators } from "redux";
 import { connect } from "react-redux";
 import actions from "../../actions";
-import { getSelectedFrame, getLoadedObjects, getPause } from "../../selectors";
+import {
+  getSelectedFrame,
+  getLoadedObjects,
+  getFrameScopes,
+  getPause
+} from "../../selectors";
 import { getScopes } from "../../utils/scopes";
 
 import _ObjectInspector from "../shared/ObjectInspector";
@@ -21,12 +26,12 @@ class Scopes extends PureComponent {
   };
 
   constructor(props, ...args) {
-    const { pauseInfo, selectedFrame } = props;
+    const { pauseInfo, selectedFrame, frameScopes } = props;
 
     super(props, ...args);
 
     this.state = {
-      scopes: getScopes(pauseInfo, selectedFrame)
+      scopes: getScopes(pauseInfo, selectedFrame, frameScopes)
     };
   }
 
@@ -37,7 +42,11 @@ class Scopes extends PureComponent {
 
     if (pauseInfoChanged || selectedFrameChange) {
       this.setState({
-        scopes: getScopes(nextProps.pauseInfo, nextProps.selectedFrame)
+        scopes: getScopes(
+          nextProps.pauseInfo,
+          nextProps.selectedFrame,
+          nextProps.frameScopes
+        )
       });
     }
   }
@@ -66,16 +75,24 @@ Scopes.propTypes = {
   pauseInfo: PropTypes.object,
   loadedObjects: PropTypes.object,
   loadObjectProperties: PropTypes.func,
-  selectedFrame: PropTypes.object
+  selectedFrame: PropTypes.object,
+  frameScopes: PropTypes.object
 };
 
 Scopes.displayName = "Scopes";
 
 export default connect(
-  state => ({
-    pauseInfo: getPause(state),
-    selectedFrame: getSelectedFrame(state),
-    loadedObjects: getLoadedObjects(state)
-  }),
+  state => {
+    const selectedFrame = getSelectedFrame(state);
+    const frameScopes = selectedFrame
+      ? getFrameScopes(state, selectedFrame.id)
+      : null;
+    return {
+      selectedFrame,
+      pauseInfo: getPause(state),
+      frameScopes: frameScopes,
+      loadedObjects: getLoadedObjects(state)
+    };
+  },
   dispatch => bindActionCreators(actions, dispatch)
 )(Scopes);
diff --git a/src/reducers/pause.js b/src/reducers/pause.js
index 3750500255..2377942acd 100644
--- a/src/reducers/pause.js
+++ b/src/reducers/pause.js
@@ -12,6 +12,7 @@ type PauseState = {
   pause: ?any,
   isWaitingOnBreak: boolean,
   frames: ?(any[]),
+  frameScopes: any,
   selectedFrameId: ?string,
   loadedObjects: Object,
   shouldPauseOnExceptions: boolean,
@@ -24,6 +25,7 @@ export const State = (): PauseState => ({
   isWaitingOnBreak: false,
   frames: undefined,
   selectedFrameId: undefined,
+  frameScopes: {},
   loadedObjects: {},
   shouldPauseOnExceptions: prefs.pauseOnExceptions,
   shouldIgnoreCaughtExceptions: prefs.ignoreCaughtExceptions,
@@ -33,9 +35,17 @@ export const State = (): PauseState => ({
 function update(state: PauseState = State(), action: Action): PauseState {
   switch (action.type) {
     case "PAUSED": {
-      const { selectedFrameId, frames, loadedObjects, pauseInfo } = action;
+      const {
+        selectedFrameId,
+        frames,
+        scopes,
+        loadedObjects,
+        pauseInfo
+      } = action;
       pauseInfo.isInterrupted = pauseInfo.why.type === "interrupted";
 
+      const frameScopes = { [selectedFrameId]: scopes };
+
       // turn this into an object keyed by object id
       let objectMap = {};
       loadedObjects.forEach(obj => {
@@ -47,6 +57,7 @@ function update(state: PauseState = State(), action: Action): PauseState {
         pause: pauseInfo,
         selectedFrameId,
         frames,
+        frameScopes,
         loadedObjects: objectMap
       });
     }
@@ -75,7 +86,13 @@ function update(state: PauseState = State(), action: Action): PauseState {
       return Object.assign({}, state, { isWaitingOnBreak: true });
 
     case "SELECT_FRAME":
-      return Object.assign({}, state, { selectedFrameId: action.frame.id });
+      const { frame, scopes } = action;
+      const selectedFrameId = frame.id;
+      return {
+        ...state,
+        frameScopes: { ...state.frameScopes, [selectedFrameId]: scopes },
+        selectedFrameId
+      };
 
     case "LOAD_OBJECT_PROPERTIES":
       if (action.status === "start") {
@@ -172,6 +189,10 @@ export function getFrames(state: OuterState) {
   return state.pause.frames;
 }
 
+export function getFrameScopes(state: OuterState, frameId: string) {
+  return state.pause.frameScopes[frameId];
+}
+
 const getSelectedFrameId = createSelector(getPauseState, pauseWrapper => {
   return pauseWrapper.selectedFrameId;
 });
diff --git a/src/selectors.js b/src/selectors.js
index 44d9e4a3ab..670395eb10 100644
--- a/src/selectors.js
+++ b/src/selectors.js
@@ -40,6 +40,7 @@ module.exports = {
   getChromeScopes: pause.getChromeScopes,
   getLoadedObjects: pause.getLoadedObjects,
   getLoadedObject: pause.getLoadedObject,
+  getFrameScopes: pause.getFrameScopes,
   getObjectProperties: pause.getObjectProperties,
   getIsWaitingOnBreak: pause.getIsWaitingOnBreak,
   getShouldPauseOnExceptions: pause.getShouldPauseOnExceptions,
diff --git a/src/utils/frame.js b/src/utils/frame.js
index 9f2f392656..ac7ddb7861 100644
--- a/src/utils/frame.js
+++ b/src/utils/frame.js
@@ -94,7 +94,8 @@ const displayNameMap = {
   },
   React: {
     // eslint-disable-next-line max-len
-    "ReactCompositeComponent._renderValidatedComponentWithoutOwnerOrContext/renderedElement<": "Render"
+    "ReactCompositeComponent._renderValidatedComponentWithoutOwnerOrContext/renderedElement<":
+      "Render"
   },
   Webpack: {
     // eslint-disable-next-line camelcase
diff --git a/src/utils/parser/tests/fixtures/var.js b/src/utils/parser/tests/fixtures/var.js
index 80ff5111b9..d5307424d4 100644
--- a/src/utils/parser/tests/fixtures/var.js
+++ b/src/utils/parser/tests/fixtures/var.js
@@ -1,4 +1,5 @@
 var foo = 1;
 let bar = 2;
 const baz = 3;
-const a = 4, b = 5;
+const a = 4,
+  b = 5;
diff --git a/src/utils/scopes.js b/src/utils/scopes.js
index e4f728a02e..d5c08bb5ce 100644
--- a/src/utils/scopes.js
+++ b/src/utils/scopes.js
@@ -3,7 +3,7 @@
 import toPairs from "lodash/toPairs";
 const get = require("lodash/get");
 
-import type { Frame, Pause } from "debugger-html";
+import type { Frame, Pause, Scope } from "debugger-html";
 
 type ScopeData = {
   name: string,
@@ -69,13 +69,16 @@ function getThisVariable(frame: any, path: string) {
 
 export function getScopes(
   pauseInfo: Pause,
-  selectedFrame: Frame
+  selectedFrame: Frame,
+  selectedScope: ?Scope
 ): ?(ScopeData[]) {
   if (!pauseInfo || !selectedFrame) {
     return null;
   }
 
-  let selectedScope = selectedFrame.scope;
+  // NOTE: it's possible that we're inspecting an old server
+  // that does not support getting frame scopes directly
+  selectedScope = selectedScope || selectedFrame.scope;
 
   if (!selectedScope) {
     return null;
diff --git a/src/utils/tests/scopes.js b/src/utils/tests/scopes.js
index dd8c4e5ae6..c5ff3bffcd 100644
--- a/src/utils/tests/scopes.js
+++ b/src/utils/tests/scopes.js
@@ -16,7 +16,8 @@ const errorGrip = {
     kind: "Error",
     name: "Error",
     message: "blah",
-    stack: "onclick@http://localhost:8000/examples/doc-return-values.html:1:18\n",
+    stack:
+      "onclick@http://localhost:8000/examples/doc-return-values.html:1:18\n",
     fileName: "http://localhost:8000/examples/doc-return-values.html",
     lineNumber: 1,
     columnNumber: 18