diff --git a/Bungee/pom.xml b/Bungee/pom.xml
index 8fb5861..d75fb9a 100644
--- a/Bungee/pom.xml
+++ b/Bungee/pom.xml
@@ -11,6 +11,11 @@
   
   <name>PandaLib-Bungee</name>
   
+  <properties>
+    <maven.compiler.source>16</maven.compiler.source>
+    <maven.compiler.target>16</maven.compiler.target>
+  </properties>
+  
   <repositories>
 	<repository>
 	 <id>papermc</id>
diff --git a/Core/.classpath b/Core/.classpath
index d4e0e69..4559ca0 100644
--- a/Core/.classpath
+++ b/Core/.classpath
@@ -13,7 +13,7 @@
 			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-16">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
diff --git a/Core/.settings/org.eclipse.jdt.core.prefs b/Core/.settings/org.eclipse.jdt.core.prefs
index 1b835cb..2af1e7b 100644
--- a/Core/.settings/org.eclipse.jdt.core.prefs
+++ b/Core/.settings/org.eclipse.jdt.core.prefs
@@ -1,8 +1,8 @@
 eclipse.preferences.version=1
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=16
-org.eclipse.jdt.core.compiler.compliance=16
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
 org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=16
+org.eclipse.jdt.core.compiler.source=11
diff --git a/Core/src/main/java/fr/pandacube/lib/core/chat/ChatColorUtil.java b/Core/src/main/java/fr/pandacube/lib/core/chat/ChatColorUtil.java
index 8026064..ca09912 100644
--- a/Core/src/main/java/fr/pandacube/lib/core/chat/ChatColorUtil.java
+++ b/Core/src/main/java/fr/pandacube/lib/core/chat/ChatColorUtil.java
@@ -255,7 +255,16 @@ public class ChatColorUtil {
 	
 	
 	public static class ChatValueGradient {
-		private record GradientValueColor(float value, ChatColor color) { }
+		//private record GradientValueColor(float value, ChatColor color) { } // Java 16
+		private static class GradientValueColor {
+			private final float value;
+			private final ChatColor color;
+			public GradientValueColor(float value, ChatColor color) {
+				this.value = value; this.color = color;
+			}
+			public float value() { return value; }
+			public ChatColor color() { return color; }
+		}
 		
 		List<GradientValueColor> colors = new ArrayList<>();
 		
diff --git a/Core/src/main/java/fr/pandacube/lib/core/db/ParameterizedSQLString.java b/Core/src/main/java/fr/pandacube/lib/core/db/ParameterizedSQLString.java
index a5eb1d0..81b8a64 100644
--- a/Core/src/main/java/fr/pandacube/lib/core/db/ParameterizedSQLString.java
+++ b/Core/src/main/java/fr/pandacube/lib/core/db/ParameterizedSQLString.java
@@ -2,6 +2,13 @@ package fr.pandacube.lib.core.db;
 
 import java.util.List;
 
-public record ParameterizedSQLString(String sqlString, List<Object> parameters) {
-
+//public record ParameterizedSQLString(String sqlString, List<Object> parameters) { } // Java 16
+public class ParameterizedSQLString {
+	private final String sqlString;
+	private final List<Object> parameters;
+	public ParameterizedSQLString(String sqlString, List<Object> parameters) {
+		this.sqlString = sqlString; this.parameters = parameters;
+	}
+	public String sqlString() { return sqlString; }
+	public List<Object> parameters() { return parameters; }
 }
diff --git a/Core/src/main/java/fr/pandacube/lib/core/players/PlayerFinder.java b/Core/src/main/java/fr/pandacube/lib/core/players/PlayerFinder.java
index 2f3e332..1e1f655 100644
--- a/Core/src/main/java/fr/pandacube/lib/core/players/PlayerFinder.java
+++ b/Core/src/main/java/fr/pandacube/lib/core/players/PlayerFinder.java
@@ -37,7 +37,16 @@ public class PlayerFinder {
 			.maximumSize(1000)
 			.build();
 	
-	record PlayerIdCacheKey(String pName, boolean old) { }
+	//record PlayerIdCacheKey(String pName, boolean old) { } // Java 16
+	static class PlayerIdCacheKey {
+		private final String pName;
+		private final boolean old;
+		public PlayerIdCacheKey(String pName, boolean old) {
+			this.pName = pName; this.old = old;
+		}
+		public String pName() { return pName; }
+		public boolean old() { return old; }
+	}
 	private static Cache<PlayerIdCacheKey, UUID> playerId = CacheBuilder.newBuilder()
 			.expireAfterWrite(2, TimeUnit.MINUTES)
 			.maximumSize(1000)
@@ -203,7 +212,17 @@ public class PlayerFinder {
 		return DIFF_CHAR_DISTANCE;
 	};
 	
-	record NamesCacheResult(String name, UUID id) { }
+	// record NamesCacheResult(String name, UUID id) { } // Java 16
+	static class NamesCacheResult {
+		private final String name;
+		private final UUID id;
+		public NamesCacheResult(String name, UUID id) {
+			this.name = name; this.id = id;
+		}
+		public String name() { return name; }
+		public UUID id() { return id; }
+	}
+	
 	private static LoadingCache<String, List<NamesCacheResult>> namesCache = CacheBuilder.newBuilder()
 			.expireAfterWrite(2, TimeUnit.MINUTES)
 			.maximumSize(1)
diff --git a/Paper/pom.xml b/Paper/pom.xml
index 294adb9..f32a88f 100644
--- a/Paper/pom.xml
+++ b/Paper/pom.xml
@@ -11,6 +11,11 @@
   
   <name>PandaLib-Paper</name>
   
+  <properties>
+    <maven.compiler.source>16</maven.compiler.source>
+    <maven.compiler.target>16</maven.compiler.target>
+  </properties>
+  
   <repositories>
 	<repository>
 	 <id>papermc</id>
diff --git a/pom.xml b/pom.xml
index 3a4162f..f53f101 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,8 +37,8 @@
 
     <properties>
         <build.number>unknown</build.number>
-        <maven.compiler.source>16</maven.compiler.source>
-        <maven.compiler.target>16</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         
         <bungeecord.version>1.16-R0.4-SNAPSHOT</bungeecord.version>