diff --git a/pom.xml b/pom.xml
index e580884..c43b69f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,8 +45,8 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>17</java.version>
         <!-- More visible way how to change dependency versions -->
-        <spigot.version>1.19.2-R0.1-SNAPSHOT</spigot.version>
-        <bentobox.version>1.19.0</bentobox.version>
+        <spigot.version>1.19.4-R0.1-SNAPSHOT</spigot.version>
+        <bentobox.version>1.23.0</bentobox.version>
         <!-- Revision variable removes warning about dynamic version -->
         <revision>${build.version}-SNAPSHOT</revision>
         <!-- This allows to change between versions and snapshots. -->
diff --git a/src/main/java/world/bentobox/caveblock/CaveBlock.java b/src/main/java/world/bentobox/caveblock/CaveBlock.java
index 712c783..c9584de 100644
--- a/src/main/java/world/bentobox/caveblock/CaveBlock.java
+++ b/src/main/java/world/bentobox/caveblock/CaveBlock.java
@@ -282,6 +282,16 @@ public class CaveBlock extends GameModeAddon
     }
 
 
+    /**
+     * This addon uses the new chunk generation API for the sea bottom
+     */
+    @Override
+    public boolean isUsesNewChunkGeneration()
+    {
+        return true;
+    }
+
+
     // ---------------------------------------------------------------------
     // Section: Variables
     // ---------------------------------------------------------------------
diff --git a/src/main/java/world/bentobox/caveblock/Settings.java b/src/main/java/world/bentobox/caveblock/Settings.java
index 64478e9..4d32700 100644
--- a/src/main/java/world/bentobox/caveblock/Settings.java
+++ b/src/main/java/world/bentobox/caveblock/Settings.java
@@ -1,12 +1,7 @@
 package world.bentobox.caveblock;
 
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 
 import org.bukkit.Difficulty;
 import org.bukkit.GameMode;
@@ -333,7 +328,7 @@ public class Settings implements WorldSettings
      * @return the defaultIslandFlags object.
      */
     @Override
-    public Map<Flag, Integer> getDefaultIslandFlags()
+    public Map<String, Integer> getDefaultIslandFlagNames()
     {
         return defaultIslandFlags;
     }
@@ -344,7 +339,7 @@ public class Settings implements WorldSettings
      * @return the defaultIslandSettings object.
      */
     @Override
-    public Map<Flag, Integer> getDefaultIslandSettings()
+    public Map<String, Integer> getDefaultIslandSettingNames()
     {
         return defaultIslandSettings;
     }
@@ -1179,7 +1174,7 @@ public class Settings implements WorldSettings
      * @param defaultIslandFlags the defaultIslandFlags object new value.
      *
      */
-    public void setDefaultIslandFlags(Map<Flag, Integer> defaultIslandFlags)
+    public void setDefaultIslandFlags(Map<String, Integer> defaultIslandFlags)
     {
         this.defaultIslandFlags = defaultIslandFlags;
     }
@@ -1190,7 +1185,7 @@ public class Settings implements WorldSettings
      * @param defaultIslandSettings the defaultIslandSettings object new value.
      *
      */
-    public void setDefaultIslandSettings(Map<Flag, Integer> defaultIslandSettings)
+    public void setDefaultIslandSettings(Map<String, Integer> defaultIslandSettings)
     {
         this.defaultIslandSettings = defaultIslandSettings;
     }
@@ -2143,6 +2138,20 @@ public class Settings implements WorldSettings
     }
 
 
+    @Override
+    public Map<Flag, Integer> getDefaultIslandFlags()
+    {
+        return Collections.emptyMap();
+    }
+
+
+    @Override
+    public Map<Flag, Integer> getDefaultIslandSettings()
+    {
+        return Collections.emptyMap();
+    }
+
+
     // ---------------------------------------------------------------------
     // Section: Variables
     // ---------------------------------------------------------------------
@@ -2439,13 +2448,11 @@ public class Settings implements WorldSettings
     @ConfigComment("  SUB-OWNER = 900")
     @ConfigComment("  OWNER     = 1000")
     @ConfigEntry(path = "world.default-cave-flags")
-    @Adapter(FlagSerializer.class)
-    private Map<Flag, Integer> defaultIslandFlags = new HashMap<>();
+    private Map<String, Integer> defaultIslandFlags = new HashMap<>();
 
     @ConfigComment("These are the default settings for new caves")
     @ConfigEntry(path = "world.default-cave-settings")
-    @Adapter(FlagSerializer2.class)
-    private Map<Flag, Integer> defaultIslandSettings = new HashMap<>();
+    private Map<String, Integer> defaultIslandSettings = new HashMap<>();
 
     @ConfigComment("These settings/flags are hidden from users")
     @ConfigComment("Ops can toggle hiding in-game using SHIFT-LEFT-CLICK on flags in settings")
diff --git a/src/main/resources/addon.yml b/src/main/resources/addon.yml
index 13f8edf..d1a8bfe 100644
--- a/src/main/resources/addon.yml
+++ b/src/main/resources/addon.yml
@@ -1,7 +1,7 @@
 name: CaveBlock
 main: world.bentobox.caveblock.CaveBlock
 version: ${version}${build.number}
-api-version: 1.19.0
+api-version: 1.23.0
 metrics: true
 repository: "BentoBoxWorld/CaveBlock"
 icon: "STONE_PICKAXE"