diff --git a/.idea/misc.xml b/.idea/misc.xml
index aff9edf..3434f4e 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -5,7 +5,7 @@
     <option name="description" value="" />
   </component>
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/CHANGELOG.log b/CHANGELOG.log
new file mode 100644
index 0000000..0f058dc
--- /dev/null
+++ b/CHANGELOG.log
@@ -0,0 +1,4 @@
+Update n°4 (11/12/23):
+
+[OTHER]
+    • Various optimizations and improvements.
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index e64c35b..bc95cae 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -12,6 +12,12 @@ val shadowImplementation: Configuration by configurations.creating
 configurations["implementation"].extendsFrom(shadowImplementation)
 configurations["testImplementation"].extendsFrom(shadowImplementation)
 
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(8)
+    }
+}
+
 repositories {
     mavenCentral()
     mavenLocal()
diff --git a/src/main/java/xyz/ineanto/nicko/anvil/AnvilManager.java b/src/main/java/xyz/ineanto/nicko/anvil/AnvilManager.java
index 15dcabf..9ec0ed1 100644
--- a/src/main/java/xyz/ineanto/nicko/anvil/AnvilManager.java
+++ b/src/main/java/xyz/ineanto/nicko/anvil/AnvilManager.java
@@ -1,5 +1,6 @@
 package xyz.ineanto.nicko.anvil;
 
+import net.kyori.adventure.text.Component;
 import net.wesjd.anvilgui.AnvilGUI;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -120,7 +121,7 @@ public class AnvilManager {
     private ItemStack getLeftItem(boolean skin) {
         final ItemStack item = new ItemStack(Material.PAPER);
         final ItemMeta meta = item.getItemMeta();
-        if (meta != null) meta.setDisplayName("§0New " + (skin ? "skin" : "name") + "...");
+        if (meta != null) meta.displayName(Component.text("§0New " + (skin ? "skin" : "name") + "..."));
         item.setItemMeta(meta);
         return item;
     }
diff --git a/src/main/java/xyz/ineanto/nicko/i18n/I18N.java b/src/main/java/xyz/ineanto/nicko/i18n/I18N.java
index 166d04d..28cc27a 100644
--- a/src/main/java/xyz/ineanto/nicko/i18n/I18N.java
+++ b/src/main/java/xyz/ineanto/nicko/i18n/I18N.java
@@ -51,7 +51,7 @@ public class I18N {
 
         if (name == null) {
             logger.warning(nameKey + " doesn't exists! Please translate this entry.");
-            return new ItemTranslation(nameKey, new ArrayList<>() {{
+            return new ItemTranslation(nameKey, new ArrayList<String>() {{
                 add(loreKey);
             }});
         }
diff --git a/src/main/java/xyz/ineanto/nicko/i18n/LocaleFileManager.java b/src/main/java/xyz/ineanto/nicko/i18n/LocaleFileManager.java
index 31518e5..e612ed8 100644
--- a/src/main/java/xyz/ineanto/nicko/i18n/LocaleFileManager.java
+++ b/src/main/java/xyz/ineanto/nicko/i18n/LocaleFileManager.java
@@ -6,22 +6,14 @@ import xyz.xenondevs.invui.util.IOUtils;
 
 import java.io.*;
 import java.nio.file.Files;
+import java.util.logging.Logger;
 
 public class LocaleFileManager {
+    private final Logger logger = Logger.getLogger("LocaleFileManager");
     private final File folder = new File(NickoBukkit.getInstance().getDataFolder() + "/lang/");
     private final File file = new File(folder, "lang.yml");
     private YamlConfig yamlFile;
 
-    public String getString(String key) {
-        if (!file.exists()) return key;
-        try (BufferedInputStream inputStream = new BufferedInputStream(Files.newInputStream(file.toPath()))) {
-            final YamlConfig yamlConfig = new YamlConfig(inputStream);
-            return yamlConfig.getString(key);
-        } catch (IOException e) {
-            return key;
-        }
-    }
-
     public boolean dumpFromLocale(Locale locale) {
         if (locale == Locale.CUSTOM) return true;
         if (file.exists()) return true;
@@ -36,7 +28,7 @@ public class LocaleFileManager {
             }
             return true;
         } catch (IOException e) {
-            e.printStackTrace();
+            logger.severe("Unable to dump Locale: " + locale.getCode() + "!");
             return false;
         }
     }
diff --git a/src/test/java/xyz/ineanto/nicko/test/config/ConfigurationTest.java b/src/test/java/xyz/ineanto/nicko/test/config/ConfigurationTest.java
index 1b29a52..76c798f 100644
--- a/src/test/java/xyz/ineanto/nicko/test/config/ConfigurationTest.java
+++ b/src/test/java/xyz/ineanto/nicko/test/config/ConfigurationTest.java
@@ -8,7 +8,6 @@ import org.junit.jupiter.api.Test;
 import xyz.ineanto.nicko.NickoBukkit;
 import xyz.ineanto.nicko.config.Configuration;
 import xyz.ineanto.nicko.config.DefaultDataSources;
-import xyz.ineanto.nicko.config.SQLDataSourceConfiguration;
 
 import static org.junit.jupiter.api.Assertions.assertFalse;