diff --git a/gradle.properties b/gradle.properties
index 38c2b8a1..e4d58a33 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,9 +5,9 @@ org.gradle.jvmargs=-Xmx1G
 	# check these on https://fabricmc.net/use
     # or better: https://modmuss50.me/fabric.html
 	minecraft_version=21w41a
-	yarn_mappings=21w41a+build.2
-	loader_version=0.12.1
-	fabric_version=0.40.9+1.18
+	yarn_mappings=21w41a+build.21
+	loader_version=0.12.2
+	fabric_version=0.41.1+1.18
 
 # Mod Properties
 	mod_version = 1.4.48
diff --git a/src/main/java/carpet/mixins/ServerChunkManagerMixin.java b/src/main/java/carpet/mixins/ServerChunkManagerMixin.java
index 3f2edb09..921856a8 100644
--- a/src/main/java/carpet/mixins/ServerChunkManagerMixin.java
+++ b/src/main/java/carpet/mixins/ServerChunkManagerMixin.java
@@ -36,12 +36,12 @@ public abstract class ServerChunkManagerMixin implements ServerChunkManagerInter
 
     @Redirect(method = "tickChunks", at = @At(
             value = "INVOKE",
-            target = "Lnet/minecraft/server/world/ChunkTicketManager;getSpawningChunkCount()I"
+            target = "Lnet/minecraft/server/world/ChunkTicketManager;getTickedChunkCount()I"
     ))
     //this runs once per world spawning cycle. Allows to grab mob counts and count spawn ticks
     private int setupTracking(ChunkTicketManager chunkTicketManager)
     {
-        int j = chunkTicketManager.getSpawningChunkCount();
+        int j = chunkTicketManager.getTickedChunkCount();
         RegistryKey<World> dim = this.world.getRegistryKey(); // getDimensionType;
         //((WorldInterface)world).getPrecookedMobs().clear(); not needed because mobs are compared with predefined BBs
         SpawnReporter.chunkCounts.put(dim, j);
diff --git a/src/main/java/carpet/mixins/WorldRenderer_fogOffMixin.java b/src/main/java/carpet/mixins/WorldRenderer_fogOffMixin.java
index b6af356f..2a4fb736 100644
--- a/src/main/java/carpet/mixins/WorldRenderer_fogOffMixin.java
+++ b/src/main/java/carpet/mixins/WorldRenderer_fogOffMixin.java
@@ -1,7 +1,7 @@
 package carpet.mixins;
 
 import carpet.CarpetSettings;
-import net.minecraft.client.render.SkyProperties;
+import net.minecraft.client.render.DimensionEffects;
 import net.minecraft.client.render.WorldRenderer;
 //import net.minecraft.world.dimension.Dimension;
 import org.spongepowered.asm.mixin.Mixin;
@@ -13,9 +13,9 @@ public class WorldRenderer_fogOffMixin
 {
     @Redirect(method = "render", require = 0, expect = 0, at = @At(
             value = "INVOKE",
-            target = "Lnet/minecraft/client/render/SkyProperties;useThickFog(II)Z"
+            target = "Lnet/minecraft/client/render/DimensionEffects;useThickFog(II)Z"
     ))
-    private boolean isReallyThick(SkyProperties skyProperties, int x, int z)
+    private boolean isReallyThick(DimensionEffects skyProperties, int x, int z)
     {
         if (CarpetSettings.fogOff) return false;
         return skyProperties.useThickFog(x, z);
diff --git a/src/main/java/carpet/script/api/WorldAccess.java b/src/main/java/carpet/script/api/WorldAccess.java
index e27c90c4..c89c84a8 100644
--- a/src/main/java/carpet/script/api/WorldAccess.java
+++ b/src/main/java/carpet/script/api/WorldAccess.java
@@ -545,7 +545,7 @@ public class WorldAccess {
         {
             c.host.issueDeprecation("loaded_ep(...)");
             BlockPos pos = BlockArgument.findIn((CarpetContext)c, lv, 0).block.getPos();
-            return BooleanValue.of(((CarpetContext)c).s.getWorld().method_37118(pos));// 1.17pre1 getChunkManager().shouldTickChunk(new ChunkPos(pos)));
+            return BooleanValue.of(((CarpetContext)c).s.getWorld().shouldTickEntity(pos));// 1.17pre1 getChunkManager().shouldTickChunk(new ChunkPos(pos)));
         });
 
         expression.addContextFunction("loaded_status", -1, (c, t, lv) ->
@@ -1187,7 +1187,7 @@ public class WorldAccess {
                 int j = i + BiomeCoords.fromBlock(chunk.getHeight()) - 1;
                 int k = MathHelper.clamp(biomeY, i, j);
                 int l = chunk.getSectionIndex(BiomeCoords.toBlock(k));
-                chunk.getSection(l).method_38294().set(biomeX & 3, k & 3, biomeZ & 3, biome);
+                chunk.getSection(l).getBiomeContainer().set(biomeX & 3, k & 3, biomeZ & 3, biome);
             } catch (Throwable var8) {
                 return Value.FALSE;
             }
diff --git a/src/main/java/carpet/script/value/EntityValue.java b/src/main/java/carpet/script/value/EntityValue.java
index 7a2c5872..d9c39fd8 100644
--- a/src/main/java/carpet/script/value/EntityValue.java
+++ b/src/main/java/carpet/script/value/EntityValue.java
@@ -536,7 +536,7 @@ public class EntityValue extends Value
                         ValueConversions.of(spe.getSpawnPointPosition()),
                         ValueConversions.of(spe.getSpawnPointDimension()),
                         new NumericValue(spe.getSpawnAngle()),
-                        BooleanValue.of(spe.isSpawnPointSet())
+                        BooleanValue.of(spe.isSpawnForced())
                         );
             }
             return Value.NULL;