diff --git a/docs/tutorial/tutorial-6-publishing-updating.md b/docs/tutorial/tutorial-6-publishing-updating.md
index a57196b1d17..bf4ffe82e7d 100644
--- a/docs/tutorial/tutorial-6-publishing-updating.md
+++ b/docs/tutorial/tutorial-6-publishing-updating.md
@@ -32,7 +32,7 @@ at [https://update.electronjs.org](https://update.electronjs.org). Its requireme
 - Your app runs on macOS or Windows
 - Your app has a public GitHub repository
 - Builds are published to [GitHub releases][]
-- Builds are [code signed][code-signed]
+- Builds are [code signed][code-signed] **(macOS only)**
 
 At this point, we'll assume that you have already pushed all your
 code to a public GitHub repository.
diff --git a/docs/tutorial/updates.md b/docs/tutorial/updates.md
index 62126ade64d..44bd64dea21 100644
--- a/docs/tutorial/updates.md
+++ b/docs/tutorial/updates.md
@@ -19,7 +19,7 @@ for Electron apps that meet the following criteria:
 - App runs on macOS or Windows
 - App has a public GitHub repository
 - Builds are published to [GitHub Releases][gh-releases]
-- Builds are [code-signed](./code-signing.md)
+- Builds are [code-signed](./code-signing.md) **(macOS only)**
 
 The easiest way to use this service is by installing [update-electron-app][],
 a Node.js module preconfigured for use with update.electronjs.org.