diff --git a/client/package.json b/client/package.json
index 5798308..7015bdc 100644
--- a/client/package.json
+++ b/client/package.json
@@ -13,6 +13,7 @@
     "elkjs-7": "npm:elkjs@0.7.0",
     "elkjs-7-1": "npm:elkjs@0.7.1",
     "elkjs-8": "npm:elkjs@0.8.2",
+    "elkjs-9": "npm:elkjs@0.9.0",
     "elkjs-latest": "npm:elkjs@latest",
     "elkjs-next": "npm:elkjs@next",
     "jquery": "^3.4.0",
diff --git a/client/src/json/json_template.html b/client/src/json/json_template.html
index 433abe7..6bb0d36 100644
--- a/client/src/json/json_template.html
+++ b/client/src/json/json_template.html
@@ -28,6 +28,7 @@
             <form class="form-inline float-right">
                 <select id="elk-version" class="custom-select">
                     <option value="latest" selected>@latest (<%= htmlWebpackPlugin.options.latestVersion %>)</option>
+                    <option value="9">0.9.0</option>
                     <option value="8">0.8.2</option>
                     <option value="7-1">0.7.1</option>
                     <option value="7">0.7.0</option>
@@ -70,4 +71,4 @@
 	<script src="jquery/jquery.slim.min.js"></script>
 	<script src="bootstrap/js/bootstrap.min.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/client/webpack.config.js b/client/webpack.config.js
index e5a263d..12c5e64 100644
--- a/client/webpack.config.js
+++ b/client/webpack.config.js
@@ -35,6 +35,7 @@ module.exports = async function (env) {
     const elkWorkerPath7 = 'node_modules/elkjs-7/lib/elk-worker.min.js';
     const elkWorkerPath7_1 = 'node_modules/elkjs-7-1/lib/elk-worker.min.js';
     const elkWorkerPath8 = 'node_modules/elkjs-8/lib/elk-worker.min.js';
+    const elkWorkerPath9 = 'node_modules/elkjs-9/lib/elk-worker.min.js';
     const elkWorkerPathLatest = 'node_modules/elkjs-latest/lib/elk-worker.min.js';
     const elkWorkerPathNext = 'node_modules/elkjs-next/lib/elk-worker.min.js';
     const currentGitCommit = childProcess.execSync('git rev-parse --short HEAD').toString().trim();
@@ -203,6 +204,10 @@ module.exports = async function (env) {
                 from: elkWorkerPath8,
                 to: 'elk-8'
             }]),
+            new CopyWebpackPlugin([{
+                from: elkWorkerPath8,
+                to: 'elk-9'
+            }]),
             new CopyWebpackPlugin([{
                 from: elkWorkerPathLatest,
                 to: 'elk-latest'
@@ -211,6 +216,7 @@ module.exports = async function (env) {
                 from: elkWorkerPathNext,
                 to: 'elk-next'
             }])
+
         ]
     }
-}
\ No newline at end of file
+}
diff --git a/server/build.gradle b/server/build.gradle
index cd9d281..601a163 100644
--- a/server/build.gradle
+++ b/server/build.gradle
@@ -11,7 +11,7 @@ buildscript {
 }
 
 ext.versions = [
-    xtext: '2.25.0',
+    xtext: '2.28.0',
     elk: '0.9.0-SNAPSHOT',
     sprotty: '0.9.1',
     lsp4j: '0.8.0',