diff --git a/flow-typed/npm/express_v4.x.x.js b/flow-typed/npm/express_v4.x.x.js
index 927fdfd76..01b9e9520 100644
--- a/flow-typed/npm/express_v4.x.x.js
+++ b/flow-typed/npm/express_v4.x.x.js
@@ -104,8 +104,8 @@ declare class express$Response extends http$ServerResponse mixins express$Reques
 
 declare type express$NextFunction = (err?: ?Error | 'route') => mixed;
 declare type express$Middleware =
-  ((req: $Subtype<express$Request>, res: express$Response, next: express$NextFunction) => mixed) |
-  ((error: Error, req: $Subtype<express$Request>, res: express$Response, next: express$NextFunction) => mixed);
+  ((req: express$Request, res: express$Response, next: express$NextFunction) => mixed) |
+  ((error: Error, req: express$Request, res: express$Response, next: express$NextFunction) => mixed);
 declare interface express$RouteMethodType<T> {
   (middleware: express$Middleware): T;
   (...middleware: Array<express$Middleware>): T;
@@ -155,7 +155,7 @@ declare class express$Router extends express$Route {
   param(
     param: string,
     callback: (
-      req: $Subtype<express$Request>,
+      req: express$Request,
       res: express$Response,
       next: express$NextFunction,
       id: string
diff --git a/flow-typed/npm/lodash_v4.x.x.js b/flow-typed/npm/lodash_v4.x.x.js
index 50631683c..9a019c870 100644
--- a/flow-typed/npm/lodash_v4.x.x.js
+++ b/flow-typed/npm/lodash_v4.x.x.js
@@ -1066,7 +1066,7 @@ declare module "lodash" {
     ): Object;
     at(object?: ?Object, ...paths: Array<string>): Array<any>;
     at(object?: ?Object, paths: Array<string>): Array<any>;
-    create<T>(prototype: T, properties: Object): $Supertype<T>;
+    create<T>(prototype: T, properties: Object): T;
     create(prototype: any, properties: void | null): {};
     defaults(object?: ?Object, ...sources?: Array<?Object>): Object;
     defaultsDeep(object?: ?Object, ...sources?: Array<?Object>): Object;
@@ -2725,7 +2725,7 @@ declare module "lodash/fp" {
     props(paths: Array<string>, object: Object): Array<any>;
     paths(paths: Array<string>): (object: Object) => Array<any>;
     paths(paths: Array<string>, object: Object): Array<any>;
-    create<T>(prototype: T): $Supertype<T>;
+    create<T>(prototype: T): T;
     defaults(source: Object): (object: Object) => Object;
     defaults(source: Object, object: Object): Object;
     defaultsAll(objects: Array<Object>): Object;
diff --git a/flow-typed/npm/prop-types_v15.x.x.js b/flow-typed/npm/prop-types_v15.x.x.js
index 113b0b5c4..63fcffb8b 100644
--- a/flow-typed/npm/prop-types_v15.x.x.js
+++ b/flow-typed/npm/prop-types_v15.x.x.js
@@ -25,7 +25,7 @@ declare module 'prop-types' {
   declare var shape: React$PropType$Shape;
 
   declare function checkPropTypes<V>(
-    propTypes: $Subtype<{[_: $Keys<V>]: $npm$propTypes$ReactPropsCheckType}>,
+    propTypes: {[_: $Keys<V>]: $npm$propTypes$ReactPropsCheckType},
     values: V,
     location: string,
     componentName: string,
diff --git a/flow-typed/npm/redux_v3.x.x.js b/flow-typed/npm/redux_v3.x.x.js
index 7bc662368..9c2edf841 100644
--- a/flow-typed/npm/redux_v3.x.x.js
+++ b/flow-typed/npm/redux_v3.x.x.js
@@ -12,7 +12,7 @@ declare module 'redux' {
   */
 
   declare export type DispatchAPI<A> = (action: A) => A;
-  declare export type Dispatch<A: { type: $Subtype<string> }> = DispatchAPI<A>;
+  declare export type Dispatch<A: { type: string }> = DispatchAPI<A>;
 
   declare export type MiddlewareAPI<S, A, D = Dispatch<A>> = {
     dispatch: D;
diff --git a/src/reducers/index.js b/src/reducers/index.js
index 3b30d4db3..e6f89ee0f 100644
--- a/src/reducers/index.js
+++ b/src/reducers/index.js
@@ -36,6 +36,7 @@ import type {
 } from './plugins.js';
 import type {Store as ReduxStore} from 'redux';
 
+// $FlowFixMe introduced when removing $Subtype/$Supertype
 export type Store = ReduxStore<
   {|
     application: ApplicationState,