diff --git a/packages/scripts/CHANGELOG.md b/packages/scripts/CHANGELOG.md
index f5d4b89bbb45b..5c373beb7cfa0 100644
--- a/packages/scripts/CHANGELOG.md
+++ b/packages/scripts/CHANGELOG.md
@@ -6,6 +6,10 @@
 
 -   Automatically copy PHP files located in the `src` folder and its subfolders to the output directory (`build` by default) ([#38715](https://github.com/WordPress/gutenberg/pull/38715)).
 
+## 21.0.2 (2022-02-15)
+
+-   Entry points are not detected in Windows OS ([#38781](https://github.com/WordPress/gutenberg/pull/38781)).
+
 ## 21.0.1 (2022-02-11)
 
 ### Bug Fix
diff --git a/packages/scripts/utils/config.js b/packages/scripts/utils/config.js
index ba2966a15e19b..b8bc4861c1f8d 100644
--- a/packages/scripts/utils/config.js
+++ b/packages/scripts/utils/config.js
@@ -230,7 +230,8 @@ function getWebpackEntryPoints() {
 						}
 						const entryName = filepath
 							.replace( extname( filepath ), '' )
-							.replace( srcDirectory, '' );
+							.replace( srcDirectory, '' )
+							.replace( /\\/g, '/' );
 
 						// Detects the proper file extension used in the `src` directory.
 						const [ entryFilepath ] = glob(