diff --git a/.gitignore b/.gitignore
index b609cc3..c575a7e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,6 @@
 /.settings/
 /bin/
 /target/
+/.idea/
+.iml
 dependency-reduced-pom.xml
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 9b26128..0f3dac3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -103,14 +103,14 @@
         </dependency>
 
         <dependency>
-            <groupId>com.github.TheBusyBiscuit</groupId>
+            <groupId>com.github.thebusybiscuit</groupId>
             <artifactId>Slimefun4</artifactId>
-            <version>RC-21</version>
+            <version>RC-27</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
-                    <groupId>io.github.thebusybiscuit</groupId>
-                    <artifactId>cscorelib2</artifactId>
+                    <groupId>io.github.baked-libs</groupId>
+                    <artifactId>dough-api</artifactId>
                 </exclusion>
             </exclusions>
         </dependency>
diff --git a/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChest.java b/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChest.java
index 5620762..87cb981 100644
--- a/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChest.java
+++ b/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChest.java
@@ -10,15 +10,15 @@
 import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.inventory.ItemStack;
 
+import io.github.thebusybiscuit.slimefun4.api.items.SlimefunItem;
+import io.github.thebusybiscuit.slimefun4.api.items.SlimefunItemStack;
+import io.github.thebusybiscuit.slimefun4.api.recipes.RecipeType;
 import io.github.thebusybiscuit.slimefun4.core.handlers.BlockBreakHandler;
 import io.github.thebusybiscuit.slimefun4.core.handlers.BlockPlaceHandler;
 import io.github.thebusybiscuit.slimefun4.implementation.SlimefunItems;
 import io.github.thebusybiscuit.slimefun4.implementation.handlers.SimpleBlockBreakHandler;
 import io.github.thebusybiscuit.slimefun4.utils.ColoredMaterial;
-import me.mrCookieSlime.Slimefun.Lists.RecipeType;
-import me.mrCookieSlime.Slimefun.Objects.SlimefunItem.SlimefunItem;
 import me.mrCookieSlime.Slimefun.api.BlockStorage;
-import me.mrCookieSlime.Slimefun.api.SlimefunItemStack;
 import me.mrCookieSlime.Slimefun.api.inventory.BlockMenuPreset;
 import me.mrCookieSlime.Slimefun.api.item_transport.ItemTransportFlow;
 
@@ -26,8 +26,8 @@ public class ColoredEnderChest extends SlimefunItem {
 
     public ColoredEnderChest(ColoredEnderChests plugin, int size, int c1, int c2, int c3) {
         // @formatter:off
-        super(plugin.category, new SlimefunItemStack("COLORED_ENDER_CHEST_" + (size == 27 ? "SMALL" : "BIG") + "_" + c1 + "_" + c2 + "_" + c3, Material.ENDER_CHEST, "&eColored Ender Chest &7(" + (size == 27 ? "Small" : "Big") + ")", "", "&7Size: &e" + size, "", "&7- " + plugin.colors.get(c1), "&7- " + plugin.colors.get(c2), "&7- "
-                + plugin.colors.get(c3)), RecipeType.ANCIENT_ALTAR, 
+        super(plugin.itemGroup, new SlimefunItemStack("COLORED_ENDER_CHEST_" + (size == 27 ? "SMALL" : "BIG") + "_" + c1 + "_" + c2 + "_" + c3, Material.ENDER_CHEST, "&eColored Ender Chest &7(" + (size == 27 ? "Small" : "Big") + ")", "", "&7Size: &e" + size, "", "&7- " + plugin.colors.get(c1), "&7- " + plugin.colors.get(c2), "&7- "
+                + plugin.colors.get(c3)), RecipeType.ANCIENT_ALTAR,
                 (size == 27) ? new ItemStack[] { 
                         new ItemStack(ColoredMaterial.WOOL.get(c1)), new ItemStack(ColoredMaterial.WOOL.get(c2)), new ItemStack(ColoredMaterial.WOOL.get(c3)), 
                         new ItemStack(Material.OBSIDIAN), new ItemStack(Material.CHEST), new ItemStack(Material.OBSIDIAN), 
@@ -139,7 +139,7 @@ public void onPlayerPlace(BlockPlaceEvent e) {
     }
 
     private static ItemStack getSmallerEnderChest(int c1, int c2, int c3) {
-        SlimefunItem enderChest = SlimefunItem.getByID("COLORED_ENDER_CHEST_SMALL_" + c1 + "_" + c2 + "_" + c3);
+        SlimefunItem enderChest = SlimefunItem.getById("COLORED_ENDER_CHEST_SMALL_" + c1 + "_" + c2 + "_" + c3);
         return enderChest != null ? enderChest.getItem() : null;
     }
 
diff --git a/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChests.java b/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChests.java
index bfd38e8..6bb5bd4 100644
--- a/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChests.java
+++ b/src/main/java/io/github/thebusybiscuit/coloredenderchests/ColoredEnderChests.java
@@ -8,19 +8,18 @@
 import org.bukkit.NamespacedKey;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import io.github.thebusybiscuit.slimefun4.api.items.ItemGroup;
+import io.github.thebusybiscuit.slimefun4.api.researches.Research;
 import io.github.thebusybiscuit.slimefun4.api.SlimefunAddon;
-import io.github.thebusybiscuit.slimefun4.core.researching.Research;
-import me.mrCookieSlime.Slimefun.Objects.Category;
-import me.mrCookieSlime.Slimefun.cscorelib2.config.Config;
-import me.mrCookieSlime.Slimefun.cscorelib2.item.CustomItem;
-import me.mrCookieSlime.Slimefun.cscorelib2.updater.GitHubBuildsUpdater;
-import me.mrCookieSlime.Slimefun.cscorelib2.updater.Updater;
+import io.github.thebusybiscuit.slimefun4.libraries.dough.config.Config;
+import io.github.thebusybiscuit.slimefun4.libraries.dough.items.CustomItemStack;
+import io.github.thebusybiscuit.slimefun4.libraries.dough.updater.GitHubBuildsUpdater;
 
 public class ColoredEnderChests extends JavaPlugin implements SlimefunAddon {
 
     protected Config cfg;
     protected Map<Integer, String> colors = new HashMap<>();
-    protected Category category;
+    protected ItemGroup itemGroup;
 
     @Override
     public void onEnable() {
@@ -30,13 +29,8 @@ public void onEnable() {
         new Metrics(this, 4907);
 
         // Setting up the Auto-Updater
-        if (getDescription().getVersion().startsWith("DEV - ")) {
-            // If we are using a development build, we want to switch to our custom
-            Updater updater = new GitHubBuildsUpdater(this, getFile(), "TheBusyBiscuit/ColoredEnderChests/master");
-
-            if (cfg.getBoolean("options.auto-update")) {
-                updater.start();
-            }
+        if (cfg.getBoolean("options.auto-update") && getDescription().getVersion().startsWith("DEV - ")) {
+            new GitHubBuildsUpdater(this, getFile(), "TheBusyBiscuit/ColoredEnderChests/master").start();
         }
 
         Research enderChestsResearch = new Research(new NamespacedKey(this, "colored_enderchests"), 2610, "Colored Ender Chests", 20);
@@ -62,7 +56,7 @@ public void onEnable() {
         colors.put(14, "&4Red");
         colors.put(15, "&8Black");
 
-        category = new Category(new NamespacedKey(this, "colored_enderchests"), new CustomItem(Material.ENDER_CHEST, "&5Colored Ender Chests"), 2);
+        itemGroup = new ItemGroup(new NamespacedKey(this, "colored_enderchests"), new CustomItemStack(Material.ENDER_CHEST, "&5Colored Ender Chests"), 2);
 
         for (int c1 = 0; c1 < 16; c1++) {
             for (int c2 = 0; c2 < 16; c2++) {