diff --git a/README.md b/README.md
index edd3d14..fed9012 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,6 @@ npm i @hpi-schul-cloud/ckeditor
 - Bold
 - Code
 - Essentials
-- FontBackgroundColor
 - Heading
 - Highlight
 - HorizontalLine
@@ -31,7 +30,6 @@ npm i @hpi-schul-cloud/ckeditor
 - Superscript
 - Table
 - TableToolbar
-- Underline
 - WordCount
 
 ## Supported languages
diff --git a/package-lock.json b/package-lock.json
index 290ebaf..d74eaa5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "@hpi-schul-cloud/ckeditor",
-	"version": "0.3.3",
+	"version": "0.4.0",
 	"lockfileVersion": 2,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "@hpi-schul-cloud/ckeditor",
-			"version": "0.3.3",
+			"version": "0.4.0",
 			"license": "AGPL-3.0",
 			"devDependencies": {
 				"@ckeditor/ckeditor5-autoformat": "^37.1.0",
@@ -16,7 +16,6 @@
 				"@ckeditor/ckeditor5-dev-utils": "^32.1.2",
 				"@ckeditor/ckeditor5-editor-balloon": "^37.1.0",
 				"@ckeditor/ckeditor5-essentials": "^37.1.0",
-				"@ckeditor/ckeditor5-font": "^37.1.0",
 				"@ckeditor/ckeditor5-heading": "^37.1.0",
 				"@ckeditor/ckeditor5-highlight": "^37.1.0",
 				"@ckeditor/ckeditor5-horizontal-line": "^37.1.0",
@@ -465,19 +464,6 @@
 				"npm": ">=5.7.1"
 			}
 		},
-		"node_modules/@ckeditor/ckeditor5-font": {
-			"version": "37.1.0",
-			"resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-font/-/ckeditor5-font-37.1.0.tgz",
-			"integrity": "sha512-mkMEtYiPRkI6lDYG1/KK7/JaVrfU5THk4ZK9GS2H+EiUqO4sujjrwzVikPA001WbLNt3C1e+qwCo9PugW4KFlQ==",
-			"dev": true,
-			"dependencies": {
-				"ckeditor5": "^37.1.0"
-			},
-			"engines": {
-				"node": ">=16.0.0",
-				"npm": ">=5.7.1"
-			}
-		},
 		"node_modules/@ckeditor/ckeditor5-heading": {
 			"version": "37.1.0",
 			"resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-heading/-/ckeditor5-heading-37.1.0.tgz",
@@ -5156,15 +5142,6 @@
 				"ckeditor5": "^37.1.0"
 			}
 		},
-		"@ckeditor/ckeditor5-font": {
-			"version": "37.1.0",
-			"resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-font/-/ckeditor5-font-37.1.0.tgz",
-			"integrity": "sha512-mkMEtYiPRkI6lDYG1/KK7/JaVrfU5THk4ZK9GS2H+EiUqO4sujjrwzVikPA001WbLNt3C1e+qwCo9PugW4KFlQ==",
-			"dev": true,
-			"requires": {
-				"ckeditor5": "^37.1.0"
-			}
-		},
 		"@ckeditor/ckeditor5-heading": {
 			"version": "37.1.0",
 			"resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-heading/-/ckeditor5-heading-37.1.0.tgz",
diff --git a/package.json b/package.json
index 51b2182..b4a52e9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@hpi-schul-cloud/ckeditor",
-	"version": "0.3.3",
+	"version": "0.4.0",
 	"description": "Custom version of CKEditor5 for the Schulcloud-Verbund-Software-Client",
 	"author": "Dataport Schulcloud-Verbund-Software Team",
 	"repository": {
@@ -27,7 +27,6 @@
 		"@ckeditor/ckeditor5-dev-utils": "^32.1.2",
 		"@ckeditor/ckeditor5-editor-balloon": "^37.1.0",
 		"@ckeditor/ckeditor5-essentials": "^37.1.0",
-		"@ckeditor/ckeditor5-font": "^37.1.0",
 		"@ckeditor/ckeditor5-heading": "^37.1.0",
 		"@ckeditor/ckeditor5-highlight": "^37.1.0",
 		"@ckeditor/ckeditor5-horizontal-line": "^37.1.0",
@@ -42,9 +41,9 @@
 		"@ckeditor/ckeditor5-word-count": "^37.1.0",
 		"@isaul32/ckeditor5-math": "^37.1.0",
 		"css-loader": "^5.2.7",
+		"mini-css-extract-plugin": "^2.7.5",
 		"postcss": "^8.4.22",
 		"postcss-loader": "^4.3.0",
-		"mini-css-extract-plugin": "^2.7.5",
 		"raw-loader": "^4.0.2",
 		"style-loader": "^2.0.0",
 		"terser-webpack-plugin": "^4.2.3",
diff --git a/src/ckeditor.js b/src/ckeditor.js
index 2a49657..fb7e1e6 100644
--- a/src/ckeditor.js
+++ b/src/ckeditor.js
@@ -4,7 +4,6 @@ import BlockQuote from "@ckeditor/ckeditor5-block-quote/src/blockquote.js";
 import Bold from "@ckeditor/ckeditor5-basic-styles/src/bold.js";
 import Code from "@ckeditor/ckeditor5-basic-styles/src/code.js";
 import Essentials from "@ckeditor/ckeditor5-essentials/src/essentials.js";
-import FontBackgroundColor from "@ckeditor/ckeditor5-font/src/font.js";
 import Heading from "@ckeditor/ckeditor5-heading/src/heading.js";
 import Highlight from "@ckeditor/ckeditor5-highlight/src/highlight.js";
 import HorizontalLine from "@ckeditor/ckeditor5-horizontal-line/src/horizontalline.js";
@@ -21,7 +20,6 @@ import Subscript from "@ckeditor/ckeditor5-basic-styles/src/subscript.js";
 import Superscript from "@ckeditor/ckeditor5-basic-styles/src/superscript.js";
 import Table from "@ckeditor/ckeditor5-table/src/table.js";
 import TableToolbar from "@ckeditor/ckeditor5-table/src/tabletoolbar.js";
-import Underline from "@ckeditor/ckeditor5-basic-styles/src/underline.js";
 import WordCount from "@ckeditor/ckeditor5-word-count/src/wordcount.js";
 import addMissingTranslationsDe from "./locales/de";
 import addMissingTranslationsEn from "./locales/en";
@@ -40,7 +38,6 @@ Editor.builtinPlugins = [
 	Bold,
 	Code,
 	Essentials,
-	FontBackgroundColor,
 	Heading,
 	Highlight,
 	HorizontalLine,
@@ -57,7 +54,6 @@ Editor.builtinPlugins = [
 	Superscript,
 	Table,
 	TableToolbar,
-	Underline,
 	WordCount,
 ];
 
@@ -71,10 +67,8 @@ Editor.defaultConfig = {
 			"|",
 			"bold",
 			"italic",
-			"underline",
 			"strikethrough",
 			"highlight",
-			"fontBackgroundColor",
 			"code",
 			"superscript",
 			"subscript",