diff --git a/common/src/main/java/org/embeddedt/modernfix/util/DummyServerConfiguration.java b/common/src/main/java/org/embeddedt/modernfix/util/DummyServerConfiguration.java
index 1be9b4f3..8b50b073 100644
--- a/common/src/main/java/org/embeddedt/modernfix/util/DummyServerConfiguration.java
+++ b/common/src/main/java/org/embeddedt/modernfix/util/DummyServerConfiguration.java
@@ -6,6 +6,7 @@ import net.minecraft.nbt.CompoundTag;
 import net.minecraft.world.level.*;
 import net.minecraft.core.RegistryAccess;
 import net.minecraft.world.Difficulty;
+import net.minecraft.world.level.dimension.end.EndDragonFight;
 import net.minecraft.world.level.levelgen.WorldOptions;
 import net.minecraft.world.level.storage.WorldData;
 import net.minecraft.world.level.storage.ServerLevelData;
@@ -130,12 +131,12 @@ public class DummyServerConfiguration implements WorldData {
     }
 
     @Override
-    public CompoundTag endDragonFightData() {
-        return null;
+    public EndDragonFight.Data endDragonFightData() {
+        return EndDragonFight.Data.DEFAULT;
     }
 
     @Override
-    public void setEndDragonFightData(CompoundTag nbt) {
+    public void setEndDragonFightData(EndDragonFight.Data data) {
 
     }
 
diff --git a/gradle.properties b/gradle.properties
index d183f66a..e4a22ef0 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,7 +2,7 @@
 org.gradle.jvmargs=-Xmx2G
 
 mod_id=modernfix
-minecraft_version=1.20-pre2
+minecraft_version=1.20-rc1
 enabled_platforms=fabric
 forge_version=1.19.4-45.0.22
 parchment_version=2023.03.12
@@ -13,8 +13,8 @@ ctm_version=1.19.2-1.1.7+11
 kubejs_version=1902.6.0-build.142
 rhino_version=1902.2.2-build.268
 
-fabric_loader_version=0.14.19
-fabric_api_version=0.81.2+1.20
+fabric_loader_version=0.14.21
+fabric_api_version=0.83.0+1.20
 
 continuity_version=3.0.0-beta.2+1.19.3