diff --git a/types/karma-chai-sinon/index.d.ts b/types/karma-chai-sinon/index.d.ts
index 1ce2672b23..76ee313a40 100644
--- a/types/karma-chai-sinon/index.d.ts
+++ b/types/karma-chai-sinon/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/tubalmartin/karma-chai-sinon
 // Definitions by: Václav Ostrožlík <https://github.com/vasek17>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 /// <reference types="chai" />
 import Sinon = require("sinon");
diff --git a/types/mochaccino/index.d.ts b/types/mochaccino/index.d.ts
index 3f0a2e9688..b230218ee9 100644
--- a/types/mochaccino/index.d.ts
+++ b/types/mochaccino/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/pawelgalazka/mochaccino#readme
 // Definitions by: Thomas-P <https://github.com/thomas-p>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 import * as Sinon from "sinon";
 export interface Expect {
     not: Expect;
diff --git a/types/should-sinon/index.d.ts b/types/should-sinon/index.d.ts
index 467d217aa9..25233c1c61 100644
--- a/types/should-sinon/index.d.ts
+++ b/types/should-sinon/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/shouldjs/sinon
 // Definitions by: AryloYeung <https://github.com/Arylo>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 import * as s from "sinon";
 import should = require("should");
diff --git a/types/sinon-as-promised/index.d.ts b/types/sinon-as-promised/index.d.ts
index 49e9b29bd3..097e13a1a0 100644
--- a/types/sinon-as-promised/index.d.ts
+++ b/types/sinon-as-promised/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/bendrucker/sinon-as-promised
 // Definitions by: igrayson <https://github.com/igrayson>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 import * as s from "sinon";
 
diff --git a/types/sinon-chai/index.d.ts b/types/sinon-chai/index.d.ts
index cff6d0b3a2..8c6d7eb2d0 100644
--- a/types/sinon-chai/index.d.ts
+++ b/types/sinon-chai/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/domenic/sinon-chai
 // Definitions by: Kazi Manzur Rashid <https://github.com/kazimanzurrashid>, Jed Mao <https://github.com/jedmao>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 /// <reference types="chai" />
 /// <reference types="sinon" />
diff --git a/types/sinon-chrome/index.d.ts b/types/sinon-chrome/index.d.ts
index 9776b0bb30..263135e060 100644
--- a/types/sinon-chrome/index.d.ts
+++ b/types/sinon-chrome/index.d.ts
@@ -4,7 +4,7 @@
 //                 CRIMX <https://github.com/crimx>
 //                 kobanyan <https://github.com/kobanyan>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.4
 
 /// <reference types="chrome"/>
 /// <reference types="sinon"/>
diff --git a/types/sinon-express-mock/index.d.ts b/types/sinon-express-mock/index.d.ts
index f3974fc005..10c8ef824d 100644
--- a/types/sinon-express-mock/index.d.ts
+++ b/types/sinon-express-mock/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Jared Chapiewsky <https://github.com/jpchip>
 //                 Tomek Łaziuk <https://github.com/tlaziuk>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 import {
     SinonStub,
diff --git a/types/sinon-mongoose/index.d.ts b/types/sinon-mongoose/index.d.ts
index 86109b4917..2d9099a060 100644
--- a/types/sinon-mongoose/index.d.ts
+++ b/types/sinon-mongoose/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/underscopeio/sinon-mongoose
 // Definitions by: stevehipwell <https://github.com/stevehipwell>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 import * as s from "sinon";
 
diff --git a/types/sinon-stub-promise/index.d.ts b/types/sinon-stub-promise/index.d.ts
index d817113cf7..6de3b17b2a 100644
--- a/types/sinon-stub-promise/index.d.ts
+++ b/types/sinon-stub-promise/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Thiago Temple <https://github.com/vintem>
 //                 Tim Stackhouse <https://github.com/tstackhouse>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 /// <reference types="sinon"/>
 
diff --git a/types/sinon-test/index.d.ts b/types/sinon-test/index.d.ts
index 902064a7cb..4cda8702a6 100644
--- a/types/sinon-test/index.d.ts
+++ b/types/sinon-test/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/sinonjs/sinon-test
 // Definitions by: Francis Saul <https://github.com/mummybot>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 import * as Sinon from 'sinon';
 
diff --git a/types/sinon/index.d.ts b/types/sinon/index.d.ts
index 0bc7d112fc..2395ee2ed2 100644
--- a/types/sinon/index.d.ts
+++ b/types/sinon/index.d.ts
@@ -5,9 +5,8 @@
 //                 Lukas Spieß <https://github.com/lumaxis>
 //                 Nico Jansen <https://github.com/nicojs>
 //                 James Garbutt <https://github.com/43081j>
-//                 Josh Goldberg <https://github.com/joshuakgoldberg>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.8
+// TypeScript Version: 2.3
 
 // sinon uses DOM dependencies which are absent in browser-less environment like node.js
 // to avoid compiler errors this monkey patch is used
@@ -567,20 +566,15 @@ declare namespace Sinon {
     }
 
     /**
-     * An instance of a stubbed object type with functions replaced by stubs.
+     * An instance of a stubbed object type with members replaced by stubs.
      *
      * @template TType Object type being stubbed.
      */
     type SinonStubbedInstance<TType> = {
         // TODO: this should really only replace functions on TType with SinonStubs, not all properties
         // Likely infeasible without mapped conditional types, per https://github.com/Microsoft/TypeScript/issues/12424
-        [P in keyof TType]: SinonStubbedMember<TType[P]>;
+        [P in keyof TType]: SinonStub;
     };
-
-    /**
-     * Replaces a type with a Sinon stub if it's a function.
-     */
-    type SinonStubbedMember<T> = T extends Function ? SinonStub : T;
 }
 
 declare const Sinon: Sinon.SinonStatic;
diff --git a/types/sinon/sinon-tests.ts b/types/sinon/sinon-tests.ts
index c6ffc7a51e..17e8cc6084 100644
--- a/types/sinon/sinon-tests.ts
+++ b/types/sinon/sinon-tests.ts
@@ -154,15 +154,6 @@ function testSandbox() {
     sandbox.createStubInstance<TestCreateStubInstance>(TestCreateStubInstance).someTestMethod('some argument');
 }
 
-class OneFunctionOneNumber {
-    memberFunction() { }
-    memberNumber: number;
-}
-
-const stubInstance = sinon.createStubInstance<OneFunctionOneNumber>(OneFunctionOneNumber);
-const memberFunction: sinon.SinonStub = stubInstance.memberFunction;
-const memberNumber: number = stubInstance.memberNumber;
-
 function testPromises() {
     let resolveStub = sinon.stub().resolves();
     resolveStub = sinon.stub().resolves(10);