diff --git a/cli/types/index.d.ts b/cli/types/index.d.ts
index abe6855a4dca..47d813e3329b 100644
--- a/cli/types/index.d.ts
+++ b/cli/types/index.d.ts
@@ -4,7 +4,7 @@
 //                 Mike Woudenberg <https://github.com/mikewoudenberg>
 //                 Robbert van Markus <https://github.com/rvanmarkus>
 //                 Nicholas Boll <https://github.com/nicholasboll>
-// TypeScript Version: 3.0
+// TypeScript Version: 3.4
 // Updated by the Cypress team: https://www.cypress.io/about/
 
 /// <reference types="blob-util" />
@@ -2026,7 +2026,7 @@ declare namespace Cypress {
     })
     ```
      */
-    window(options?: Partial<Loggable & Timeoutable>): Chainable<Window>
+    window(options?: Partial<Loggable & Timeoutable>): Chainable<Window & typeof globalThis>
 
     /**
      * Scopes all subsequent cy commands to within this element.
diff --git a/cli/types/tests/kitchen-sink.ts b/cli/types/tests/kitchen-sink.ts
index 191d1853ce9b..79915eee228e 100644
--- a/cli/types/tests/kitchen-sink.ts
+++ b/cli/types/tests/kitchen-sink.ts
@@ -117,6 +117,12 @@ const obj = {
 }
 cy.spy(obj, 'foo').as('my-spy')
 
+cy.window().then(window => {
+  window // $ExpectType Window & typeof globalThis
+
+  window.eval('1')
+})
+
 // use path-based access for nested structures
 cy.wrap({
   foo: {