diff --git a/build.gradle b/build.gradle
index 1bd7e29..154c681 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@ apply plugin: 'org.spongepowered.mixin'
 
 def buildnumber = System.getenv('TRAVIS_BUILD_NUMBER')
 def suffix = buildnumber != null ? ".$buildnumber" : "-SNAPSHOT"
-version = "1.1.0$suffix"
+version = "1.2.0$suffix"
 group = "uk.bobbytables.jeidsi" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "jeidsi"
 
@@ -29,6 +29,9 @@ minecraft {
     mappings "stable_39"
     makeObfSourceJar false // an Srg named sources jar is made by default. uncomment this to disable.
 
+    replaceIn "JEIDsI.java"
+    replace "@VERSION@", project.version
+
     def args = [
             '-Dfml.coreMods.load=uk.bobbytables.jeidsi.JEIDsILoadingPlugin',
             '-Dmixin.hotSwap=true',
@@ -56,6 +59,7 @@ dependencies {
     
     compileOnly '2691:339:AbyssalCraft-1.12.2-1.9.6@jar'
     compileOnly '2683:823:Bookshelf-1.12.2-2.3.577@jar'
+    compileOnly '2691:93:CyclopsCore-1.12.2-1.1.1@jar'
     compileOnly '2678:374:extrautils2-1.12-1.9.9@jar'
     compileOnly '2683:667:TheBetweenlands-3.4.6-universal@jar'
     compileOnly '2692:524:TofuCraftReload-0.0.2.1@jar'
diff --git a/src/main/java/uk/bobbytables/jeidsi/JEIDsI.java b/src/main/java/uk/bobbytables/jeidsi/JEIDsI.java
index 4dfee11..84b80f1 100644
--- a/src/main/java/uk/bobbytables/jeidsi/JEIDsI.java
+++ b/src/main/java/uk/bobbytables/jeidsi/JEIDsI.java
@@ -10,7 +10,7 @@
 public class JEIDsI {
     public static final String MODID = "jeidsi";
     public static final String NAME = "JustEnoughIDs Integration";
-    public static final String VERSION = "1.0.0";
+    public static final String VERSION = "@VERSION@";
     
     public static final Logger LOGGER = LogManager.getLogger("JEIDsI");
 
diff --git a/src/main/java/uk/bobbytables/jeidsi/compat/cyclopscore/mixins/MixinWorldHelpers.java b/src/main/java/uk/bobbytables/jeidsi/compat/cyclopscore/mixins/MixinWorldHelpers.java
new file mode 100644
index 0000000..2b1bf14
--- /dev/null
+++ b/src/main/java/uk/bobbytables/jeidsi/compat/cyclopscore/mixins/MixinWorldHelpers.java
@@ -0,0 +1,29 @@
+package uk.bobbytables.jeidsi.compat.cyclopscore.mixins;
+
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import net.minecraft.world.biome.Biome;
+import net.minecraft.world.chunk.Chunk;
+import net.minecraftforge.fml.common.network.NetworkRegistry;
+import org.cyclops.cyclopscore.helper.WorldHelpers;
+import org.dimdev.jeid.INewChunk;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+import uk.bobbytables.jeidsi.network.JEIDsIPacketHandler;
+import uk.bobbytables.jeidsi.network.client.BiomeChangeMessage;
+
+@Mixin(WorldHelpers.class)
+public class MixinWorldHelpers {
+    @Overwrite
+    public static void setBiome(World world, BlockPos pos, Biome biome) {
+        Chunk chunk = world.getChunk(pos);
+        ((INewChunk) chunk).getIntBiomeArray()[(pos.getZ() & 0xF) << 4 | pos.getX() & 0xF] = Biome.getIdForBiome(biome);
+        chunk.markDirty();
+        if (!world.isRemote) {
+            JEIDsIPacketHandler.INSTANCE.sendToAllAround(
+                    new BiomeChangeMessage(pos.getX(), pos.getZ(), Biome.getIdForBiome(biome)),
+                    new NetworkRegistry.TargetPoint(world.provider.getDimension(), pos.getX(), 128.0D, pos.getZ(), 128.0D)
+            );
+        }
+    }
+}
diff --git a/src/main/java/uk/bobbytables/jeidsi/init/mixins/MixinLoader.java b/src/main/java/uk/bobbytables/jeidsi/init/mixins/MixinLoader.java
index 07b9554..54c7551 100644
--- a/src/main/java/uk/bobbytables/jeidsi/init/mixins/MixinLoader.java
+++ b/src/main/java/uk/bobbytables/jeidsi/init/mixins/MixinLoader.java
@@ -21,6 +21,7 @@ public class MixinLoader {
     private void beforeModSupportMixins(List<String> injectedModContainers, CallbackInfo ci) {
         Mixins.addConfiguration("mixins.jeidsi.abyssalcraft.json");
         Mixins.addConfiguration("mixins.jeidsi.bookshelf.json");
+        Mixins.addConfiguration("mixins.jeidsi.cyclopscore.json");
         Mixins.addConfiguration("mixins.jeidsi.extrautils2.json");
         Mixins.addConfiguration("mixins.jeidsi.tofucraft.json");
         Mixins.addConfiguration("mixins.jeidsi.thebetweenlands.json");
diff --git a/src/main/resources/mixins.jeidsi.cyclopscore.json b/src/main/resources/mixins.jeidsi.cyclopscore.json
new file mode 100644
index 0000000..d6b26f7
--- /dev/null
+++ b/src/main/resources/mixins.jeidsi.cyclopscore.json
@@ -0,0 +1,11 @@
+{
+  "package": "uk.bobbytables.jeidsi.compat.cyclopscore",
+  "required": true,
+  "refmap": "mixins.jeidsi.refmap.json",
+  "target": "@env(DEFAULT)",
+  "minVersion": "0.6",
+  "compatibilityLevel": "JAVA_8",
+  "mixins": [
+    "mixins.MixinWorldHelpers"
+  ]
+}
\ No newline at end of file