diff --git a/build.gradle.kts b/build.gradle.kts
index 60ac2571e..c800414ff 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,6 +1,6 @@
 import com.dfsek.terra.getGitHash
 
-val versionObj = Version("5", "3", "3", true)
+val versionObj = Version("5", "4", "0", true)
 
 allprojects {
     version = versionObj
diff --git a/common/build.gradle.kts b/common/build.gradle.kts
index 311054dd7..ca834dd81 100644
--- a/common/build.gradle.kts
+++ b/common/build.gradle.kts
@@ -17,7 +17,7 @@ dependencies {
     "shadedApi"("commons-io:commons-io:2.4")
 
     "shadedApi"("com.dfsek:Paralithic:0.3.2")
-    "shadedApi"("com.dfsek:Tectonic:1.3.1")
+    "shadedApi"("com.dfsek:Tectonic:1.4.0")
     "shadedApi"("net.jafama:jafama:2.3.2")
     "shadedApi"("org.yaml:snakeyaml:1.27")
     "shadedApi"("org.ow2.asm:asm:9.0")
diff --git a/common/src/main/java/com/dfsek/terra/commands/biome/BiomeInfoCommand.java b/common/src/main/java/com/dfsek/terra/commands/biome/BiomeInfoCommand.java
index 4fe3fe2ac..b1d0ffe1b 100644
--- a/common/src/main/java/com/dfsek/terra/commands/biome/BiomeInfoCommand.java
+++ b/common/src/main/java/com/dfsek/terra/commands/biome/BiomeInfoCommand.java
@@ -29,19 +29,24 @@ public class BiomeInfoCommand implements CommandTemplate {
 
     @Override
     public void execute(CommandSender sender) {
-
         sender.sendMessage("Biome info for \"" + biome.getID() + "\".");
         sender.sendMessage("Vanilla biome: " + biome.getVanillaBiomes());
 
         if(biome instanceof UserDefinedBiome) {
             BiomeTemplate bio = ((UserDefinedBiome) biome).getConfig();
 
-            if(bio.getExtend() != null) sender.sendMessage("Extends: " + bio.getExtend());
+            if(bio.getExtended().size() == 0) {
+                sender.sendMessage("No Parent Biomes");
+            } else {
+                sender.sendMessage("------Parent Biomes-----");
+                bio.getExtended().forEach(id -> sender.sendMessage(" - " + id));
+            }
 
             List<TerraStructure> structureConfigs = bio.getStructures();
 
-            if(structureConfigs.size() == 0) sender.sendMessage("No Structures");
-            else {
+            if(structureConfigs.size() == 0) {
+                sender.sendMessage("No Structures");
+            } else {
                 sender.sendMessage("-------Structures-------");
                 for(TerraStructure c : structureConfigs) {
                     sender.sendMessage(" - " + c.getTemplate().getID());
diff --git a/common/src/main/java/com/dfsek/terra/config/templates/BiomeTemplate.java b/common/src/main/java/com/dfsek/terra/config/templates/BiomeTemplate.java
index 69ee69122..f8f62a4db 100644
--- a/common/src/main/java/com/dfsek/terra/config/templates/BiomeTemplate.java
+++ b/common/src/main/java/com/dfsek/terra/config/templates/BiomeTemplate.java
@@ -30,6 +30,7 @@ import com.dfsek.terra.world.population.items.flora.FloraLayer;
 import com.dfsek.terra.world.population.items.ores.OreHolder;
 import com.dfsek.terra.world.population.items.tree.TreeLayer;
 
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
@@ -39,7 +40,6 @@ import java.util.Set;
 
 @SuppressWarnings({"FieldMayBeFinal", "unused"})
 public class BiomeTemplate extends AbstractableTemplate implements ValidatedConfigTemplate {
-
     private final ConfigPack pack;
 
     @Value("id")
@@ -47,7 +47,7 @@ public class BiomeTemplate extends AbstractableTemplate implements ValidatedConf
 
     @Value("extends")
     @Default
-    private String extend = null;
+    private List<String> extended = Collections.emptyList();
 
     @Value("variables")
     @Abstractable
@@ -195,6 +195,10 @@ public class BiomeTemplate extends AbstractableTemplate implements ValidatedConf
     @Default
     private Map<String, Integer> colors = new HashMap<>(); // Plain ol' map, so platforms can decide what to do with colors (if anything).
 
+    public List<String> getExtended() {
+        return extended;
+    }
+
     public Set<String> getTags() {
         return tags;
     }
@@ -227,10 +231,6 @@ public class BiomeTemplate extends AbstractableTemplate implements ValidatedConf
         return interpolateElevation;
     }
 
-    public String getExtend() {
-        return extend;
-    }
-
     public double getSlantThreshold() {
         return slantThreshold;
     }