diff --git a/storeys/build.gradle b/storeys/build.gradle
index 8e3cb74e..3166159d 100644
--- a/storeys/build.gradle
+++ b/storeys/build.gradle
@@ -8,8 +8,10 @@ dependencies {
     api project(':api-jvm-impl')
     api 'ch.vorburger.minecraft.osgi:api:1.0.0'
     implementation 'ch.vorburger:fswatch:1.3.0'
-    implementation 'org.graalvm.js:js-scriptengine:21.2.0'
-    runtimeOnly 'org.graalvm.js:js:21.2.0'
+    implementation files('libs/graal-sdk.jar')
+    implementation files('libs/graaljs.jar')
+    implementation files('libs/tregex.jar')
+    implementation files('libs/truffle-api.jar')
     implementation project(':example')
     testImplementation project(':test-utils')
 }
diff --git a/storeys/libs/graal-sdk.jar b/storeys/libs/graal-sdk.jar
new file mode 100644
index 00000000..77a4c1c0
Binary files /dev/null and b/storeys/libs/graal-sdk.jar differ
diff --git a/storeys/libs/graaljs.jar b/storeys/libs/graaljs.jar
new file mode 100644
index 00000000..ed8673a0
Binary files /dev/null and b/storeys/libs/graaljs.jar differ
diff --git a/storeys/libs/tregex.jar b/storeys/libs/tregex.jar
new file mode 100644
index 00000000..e543abab
Binary files /dev/null and b/storeys/libs/tregex.jar differ
diff --git a/storeys/libs/truffle-api.jar b/storeys/libs/truffle-api.jar
new file mode 100644
index 00000000..79bd2e18
Binary files /dev/null and b/storeys/libs/truffle-api.jar differ
diff --git a/storeys/src/test/java/ch/vorburger/minecraft/storeys/tests/GraalTest.java b/storeys/src/test/java/ch/vorburger/minecraft/storeys/tests/GraalTest.java
new file mode 100644
index 00000000..bfaf1f8d
--- /dev/null
+++ b/storeys/src/test/java/ch/vorburger/minecraft/storeys/tests/GraalTest.java
@@ -0,0 +1,39 @@
+/*
+ * ch.vorburger.minecraft.storeys
+ *
+ * Copyright (C) 2016 - 2018 Michael Vorburger.ch <mike@vorburger.ch>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package ch.vorburger.minecraft.storeys.tests;
+
+import java.util.List;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineFactory;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+import org.junit.Test;
+
+public class GraalTest {
+
+    @Test public void testJsEngine() throws ScriptException {
+        List<ScriptEngineFactory> engines = (new ScriptEngineManager()).getEngineFactories();
+        for (ScriptEngineFactory f : engines) {
+            System.out.println(f.getLanguageName() + " " + f.getEngineName() + " " + f.getNames().toString());
+        }
+
+        final ScriptEngine scriptEngine = new ScriptEngineManager().getEngineByName("graal.js");
+        System.out.println(scriptEngine.eval("1+1"));
+    }
+}
diff --git a/web/build.gradle b/web/build.gradle
index 8a41ddbf..ec30feea 100644
--- a/web/build.gradle
+++ b/web/build.gradle
@@ -81,8 +81,6 @@ shadowJar {
     include(dependency("io.netty:netty-codec-http"))
     include(dependency("io.netty:netty-codec-http2"))
     include(dependency("com.fasterxml.jackson.core:jackson-core"))
-    include(dependency("org.graalvm.js:js-scriptengine"))
-    include(dependency("org.graalvm.js:js"))
     exclude 'module-info.class'
   }
 }