diff --git a/build.gradle b/build.gradle
index 08f92e1..8b48dc9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id("com.gradleup.shadow") version "9.2.2"
+    id("com.gradleup.shadow") version "9.3.1"
 }
 
 group 'net.mackenziemolloy.shopguiplus.sellgui'
@@ -8,15 +8,15 @@ version '1.1.8'
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(17)
+        languageVersion = JavaLanguageVersion.of(8)
     }
 
-    sourceCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_1_8
     targetCompatibility = sourceCompatibility
 }
 
 repositories {
-	mavenLocal()
+    mavenLocal()
     mavenCentral()
 
     maven { url = 'https://repo.papermc.io/repository/maven-public/' }
@@ -24,14 +24,14 @@ repositories {
     maven { url = 'https://oss.sonatype.org/content/repositories/snapshots/' }
     maven { url = 'https://repo.codemc.org/repository/maven-public/' }
     maven { url = 'https://jitpack.io/' }
-    maven { url = "https://repo.tcoded.com/releases"}
+    maven { url = "https://repo.tcoded.com/releases" }
 }
 
 dependencies {
-    compileOnly "org.spigotmc:spigot-api:1.21.8-R0.1-SNAPSHOT"
-    compileOnly 'com.github.brcdev-minecraft:shopgui-api:3.0.0'
+    compileOnly "org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT"
+    compileOnly "com.github.brcdev-minecraft:shopgui-api:3.2.0"
     implementation "dev.triumphteam:triumph-gui:3.1.13"
-    implementation 'org.bstats:bstats-bukkit:3.1.0'
+    implementation "org.bstats:bstats-bukkit:3.1.0"
     implementation "com.tcoded:FoliaLib:0.5.1"
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 8bdaf60..61285a6 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 2e11132..37f78a6 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/command/CommandSellGUI.java b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/command/CommandSellGUI.java
index 78da7f3..1cf2e85 100644
--- a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/command/CommandSellGUI.java
+++ b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/command/CommandSellGUI.java
@@ -105,11 +105,16 @@ public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command
         }
 
         String sub = args[0].toLowerCase(Locale.US);
-        return switch (sub) {
-            case "rl", "reload" -> commandReload(sender);
-            case "debug", "dump" -> commandDebug(sender);
-            default -> false;
-        };
+        switch (sub) {
+            case "rl":
+            case "reload":
+                return commandReload(sender);
+            case "debug":
+            case "dump":
+                return commandDebug(sender);
+            default:
+                return false;
+        }
     }
 
     private boolean commandReload(CommandSender sender) {
@@ -129,7 +134,8 @@ private boolean commandReload(CommandSender sender) {
             else if (this.plugin.fileLogger == null) this.plugin.initLogger();
 
             sendMessage(sender, "reloaded_config");
-            if (sender instanceof Player player) {
+            if (sender instanceof Player) {
+                Player player = (Player) sender;
                 PlayerHandler.playSound(player, "success");
             }
         });
@@ -174,9 +180,12 @@ private boolean commandDebug(CommandSender sender) {
 
             String message = String.format(Locale.US, pastedDumpMsg, pasteUrl);
             Bukkit.getConsoleSender().sendMessage(message);
-            if (sender instanceof Player) sender.sendMessage(message);
+            if (sender instanceof Player) {
+                sender.sendMessage(message);
+            }
 
-            if (sender instanceof Player player) {
+            if (sender instanceof Player) {
+                Player player = (Player) sender;
                 PlayerHandler.playSound(player, "success");
             }
         } catch (IOException ex) {
@@ -188,11 +197,13 @@ private boolean commandDebug(CommandSender sender) {
     }
 
     private boolean commandBase(CommandSender sender) {
-        if (!(sender instanceof Player player)) {
+        if (!(sender instanceof Player)) {
             sender.sendMessage(ChatColor.RED + "Only players can execute this command.");
             return true;
         }
 
+        Player player = (Player) sender;
+
         if (!player.hasPermission("sellgui.use")) {
             sendMessage(player, "no_permission");
             return true;
@@ -576,7 +587,8 @@ private void sendMessage(CommandSender sender, String path, @Nullable Function<S
             return;
         }
 
-        if (sender instanceof Player player) {
+        if (sender instanceof Player) {
+            Player player = (Player) sender;
             BaseComponent[] components = TextComponent.fromLegacyText(message);
             player.spigot().sendMessage(components);
         } else {
diff --git a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/CommentedConfiguration.java b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/CommentedConfiguration.java
index af28488..4031618 100644
--- a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/CommentedConfiguration.java
+++ b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/CommentedConfiguration.java
@@ -72,7 +72,9 @@ public CommentedConfiguration() {
      *                        config, they will be synced with the resource's config.
      */
     public void syncWithConfig(File file, InputStream resource, String... ignoredSections) throws IOException{
-        if(creationFailure) return;
+        if (creationFailure) {
+            return;
+        }
 
         CommentedConfiguration cfg = loadConfiguration(resource);
         if (syncConfigurationSection(cfg, cfg.getConfigurationSection(""), Arrays.asList(ignoredSections)) && file != null) {
@@ -213,7 +215,7 @@ public String saveToString() {
             contents.append("\n").append(line);
         }
 
-        return contents.isEmpty() ? "" : contents.substring(1);
+        return contents.length() == 0 ? "" : contents.substring(1);
     }
 
     /**
diff --git a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/PlayerHandler.java b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/PlayerHandler.java
index 0e4b8a6..a1d690c 100644
--- a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/PlayerHandler.java
+++ b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/PlayerHandler.java
@@ -70,7 +70,9 @@ public static void playSound(Player player, String event) {
 
         Location location = player.getLocation();
         Sound sound = getSound(event);
-        if (sound == null) return;
+        if (sound == null) {
+            return;
+        }
 
         player.playSound(location, sound, volume, pitch);
     }
diff --git a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/sirblobman/HexColorUtility.java b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/sirblobman/HexColorUtility.java
index 80a5b63..853be08 100644
--- a/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/sirblobman/HexColorUtility.java
+++ b/src/main/java/net/mackenziemolloy/shopguiplus/sellgui/utility/sirblobman/HexColorUtility.java
@@ -24,7 +24,7 @@ public final class HexColorUtility {
         Pattern pattern = getReplaceAllRgbPattern(colorChar);
         Matcher matcher = pattern.matcher(string);
 
-        StringBuilder buffer = new StringBuilder();
+        StringBuffer buffer = new StringBuffer();
         while (matcher.find()) {
             if (matcher.group(1) != null) {
                 matcher.appendReplacement(buffer, colorChar + "#$2");
@@ -43,7 +43,7 @@ public final class HexColorUtility {
         matcher.appendTail(buffer);
 
         // Normalize Adventure legacy serializers so that colors reset styles (bold/italic/etc.)
-        Component component = LegacyComponentSerializer.legacyAmpersand().deserialize(buffer.toString());
+        Component component = LegacyComponentSerializer.legacySection().deserialize(buffer.toString());
         return LegacyComponentSerializer.legacySection().serialize(component);
     }