diff --git a/ALL_README.md b/ALL_README.md
index e3c80d2..df3708b 100644
--- a/ALL_README.md
+++ b/ALL_README.md
@@ -6,5 +6,6 @@
 - [Lire le README en français](README_fr.md)
 - [Le o README en galego](README_gl.md)
 - [Baca README dalam bahasa bahasa Indonesia](README_id.md)
+- [Lees de README in het Nederlands](README_nl.md)
 - [Прочитать README на русский](README_ru.md)
 - [阅读中文（简体）的 README](README_zh_Hans.md)
diff --git a/README.md b/README.md
index 5ff127c..d94bb07 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ It shall NOT be edited by hand.
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**Shipped version:** 4.0.18~ynh1
+**Shipped version:** 4.0.21~ynh1
 
 **Demo:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/README_es.md b/README_es.md
index 839081a..7caef61 100644
--- a/README_es.md
+++ b/README_es.md
@@ -18,7 +18,7 @@ No se debe editar a mano.
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**Versión actual:** 4.0.18~ynh1
+**Versión actual:** 4.0.21~ynh1
 
 **Demo:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
@@ -36,7 +36,7 @@ Scratch is a free programming language and online community where you can create
 
 ## Información para desarrolladores
 
-Por favor enviar sus correcciones a la [`branch testing`](https://github.com/YunoHost-Apps/scratch_ynh/tree/testing
+Por favor enviar sus correcciones a la [rama `testing`](https://github.com/YunoHost-Apps/scratch_ynh/tree/testing).
 
 Para probar la rama `testing`, sigue asÍ:
 
diff --git a/README_eu.md b/README_eu.md
index 19da10c..d02ad12 100644
--- a/README_eu.md
+++ b/README_eu.md
@@ -18,7 +18,7 @@ EZ editatu eskuz.
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**Paketatutako bertsioa:** 4.0.18~ynh1
+**Paketatutako bertsioa:** 4.0.21~ynh1
 
 **Demoa:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/README_fr.md b/README_fr.md
index 58e9943..beb0973 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -18,7 +18,7 @@ Il NE doit PAS être modifié à la main.
 
 Scratch est un langage de programmation graphique manipulable et exécutable par le logiciel de même nom à vocation éducative. Ainsi, Scratch est à la fois un environnement de développement et un moteur d’exécution du langage Scratch mais aussi un site web.
 
-**Version incluse :** 4.0.18~ynh1
+**Version incluse :** 4.0.21~ynh1
 
 **Démo :** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/README_gl.md b/README_gl.md
index df5fa14..d20a63c 100644
--- a/README_gl.md
+++ b/README_gl.md
@@ -18,7 +18,7 @@ NON debe editarse manualmente.
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**Versión proporcionada:** 4.0.18~ynh1
+**Versión proporcionada:** 4.0.21~ynh1
 
 **Demo:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/README_id.md b/README_id.md
index 53e2f41..563cecc 100644
--- a/README_id.md
+++ b/README_id.md
@@ -18,7 +18,7 @@ Ini TIDAK boleh diedit dengan tangan.
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**Versi terkirim:** 4.0.18~ynh1
+**Versi terkirim:** 4.0.21~ynh1
 
 **Demo:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/README_nl.md b/README_nl.md
new file mode 100644
index 0000000..47858e7
--- /dev/null
+++ b/README_nl.md
@@ -0,0 +1,49 @@
+<!--
+NB: Deze README is automatisch gegenereerd door <https://github.com/YunoHost/apps/tree/master/tools/readme_generator>
+Hij mag NIET handmatig aangepast worden.
+-->
+
+# Scratch voor Yunohost
+
+[![Integratieniveau](https://dash.yunohost.org/integration/scratch.svg)](https://ci-apps.yunohost.org/ci/apps/scratch/) ![Mate van functioneren](https://ci-apps.yunohost.org/ci/badges/scratch.status.svg) ![Onderhoudsstatus](https://ci-apps.yunohost.org/ci/badges/scratch.maintain.svg)
+
+[![Scratch met Yunohost installeren](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=scratch)
+
+*[Deze README in een andere taal lezen.](./ALL_README.md)*
+
+> *Met dit pakket kun je Scratch snel en eenvoudig op een YunoHost-server installeren.*  
+> *Als je nog geen YunoHost hebt, lees dan [de installatiehandleiding](https://yunohost.org/install), om te zien hoe je 'm installeert.*
+
+## Overzicht
+
+Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
+
+**Geleverde versie:** 4.0.21~ynh1
+
+**Demo:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
+
+## Schermafdrukken
+
+![Schermafdrukken van Scratch](./doc/screenshots/800px-Scratch_3.0_Éditeur.png)
+
+## Documentatie en bronnen
+
+- Officiele website van de app: <https://scratch.mit.edu/>
+- Officiele beheerdersdocumentatie: <https://scratch-wiki.info/wiki/Scratch_3.0>
+- Upstream app codedepot: <https://github.com/scratchfoundation/scratch-gui>
+- YunoHost-store: <https://apps.yunohost.org/app/scratch>
+- Meld een bug: <https://github.com/YunoHost-Apps/scratch_ynh/issues>
+
+## Ontwikkelaarsinformatie
+
+Stuur je pull request alsjeblieft naar de [`testing`-branch](https://github.com/YunoHost-Apps/scratch_ynh/tree/testing).
+
+Om de `testing`-branch uit te proberen, ga als volgt te werk:
+
+```bash
+sudo yunohost app install https://github.com/YunoHost-Apps/scratch_ynh/tree/testing --debug
+of
+sudo yunohost app upgrade scratch -u https://github.com/YunoHost-Apps/scratch_ynh/tree/testing --debug
+```
+
+**Verdere informatie over app-packaging:** <https://yunohost.org/packaging_apps>
diff --git a/README_ru.md b/README_ru.md
index 41cb985..7092956 100644
--- a/README_ru.md
+++ b/README_ru.md
@@ -18,7 +18,7 @@
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**Поставляемая версия:** 4.0.18~ynh1
+**Поставляемая версия:** 4.0.21~ynh1
 
 **Демо-версия:** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/README_zh_Hans.md b/README_zh_Hans.md
index 2ee6a4b..ee1d10e 100644
--- a/README_zh_Hans.md
+++ b/README_zh_Hans.md
@@ -18,7 +18,7 @@
 
 Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
 
-**分发版本：** 4.0.18~ynh1
+**分发版本：** 4.0.21~ynh1
 
 **演示：** <https://scratch.mit.edu/projects/editor/?tutorial=getStarted>
 
diff --git a/manifest.toml b/manifest.toml
index 581755b..5689a6d 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -7,7 +7,7 @@ name = "Scratch"
 description.en = "Programming language to create your own interactive stories, games, and animations"
 description.fr = "Langage de programmation pour créer vos propres histoires, jeux et animations interactifs"
 
-version = "4.0.18~ynh1"
+version = "4.0.21~ynh1"
 
 maintainers = []
 
@@ -45,8 +45,8 @@ ram.runtime = "50M"
 
 [resources]
     [resources.sources.main]
-    url = "https://github.com/scratchfoundation/scratch-gui/archive/refs/tags/v4.0.18.tar.gz"
-    sha256 = "6347af2267e2c2fd8fb8d30ece66e5616c461579ea21298383574efc63b18ac9"
+    url = "https://github.com/scratchfoundation/scratch-gui/archive/refs/tags/v4.0.21.tar.gz"
+    sha256 = "dbd8caefbb476297e6601159c3c52b1df1889bf5a102f694d69190e54cbfb661"
     autoupdate.strategy = "latest_github_tag"
 
     [resources.system_user]