diff --git a/common/src/main/java/com/gitlab/cdagaming/craftpresence/utils/world/BiomeUtils.java b/common/src/main/java/com/gitlab/cdagaming/craftpresence/utils/world/BiomeUtils.java
index 1e6cd172e..ce204b7a9 100644
--- a/common/src/main/java/com/gitlab/cdagaming/craftpresence/utils/world/BiomeUtils.java
+++ b/common/src/main/java/com/gitlab/cdagaming/craftpresence/utils/world/BiomeUtils.java
@@ -31,7 +31,7 @@
 import io.github.cdagaming.unicore.utils.FileUtils;
 import io.github.cdagaming.unicore.utils.MappingUtils;
 import io.github.cdagaming.unicore.utils.StringUtils;
-import net.minecraft.src.BiomeGenBase;
+import net.minecraft.src.MobSpawnerBase;
 import unilib.external.io.github.classgraph.ClassInfo;
 
 import java.util.List;
@@ -91,7 +91,7 @@ public class BiomeUtils implements ExtendedModule {
     /**
      * The Player's Current Biome, if any
      */
-    private BiomeGenBase CURRENT_BIOME;
+    private MobSpawnerBase CURRENT_BIOME;
 
     @Override
     public void clearFieldData() {
@@ -114,7 +114,7 @@ public void clearAttributes() {
 
     @Override
     public void updateData() {
-        final BiomeGenBase newBiome = CraftPresence.world.getWorldChunkManager().func_4073_a((int) CraftPresence.player.posX, (int) CraftPresence.player.posZ);
+        final MobSpawnerBase newBiome = CraftPresence.world.getWorldChunkManager().func_4073_a((int) CraftPresence.player.posX, (int) CraftPresence.player.posZ);
         final String newBiomeName = newBiome.biomeName;
 
         final String newBiomeIdentifier = StringUtils.getOrDefault(newBiomeName, MappingUtils.getClassName(newBiome));
@@ -183,17 +183,17 @@ public void updatePresence() {
      *
      * @return The detected Biome Types found
      */
-    private List<BiomeGenBase> getBiomeTypes() {
-        List<BiomeGenBase> biomeTypes = StringUtils.newArrayList();
+    private List<MobSpawnerBase> getBiomeTypes() {
+        List<MobSpawnerBase> biomeTypes = StringUtils.newArrayList();
 
         if (biomeTypes.isEmpty()) {
             // Fallback: Use Manual Class Lookup
-            for (ClassInfo classInfo : FileUtils.getClassNamesMatchingSuperType(BiomeGenBase.class).values()) {
+            for (ClassInfo classInfo : FileUtils.getClassNamesMatchingSuperType(MobSpawnerBase.class).values()) {
                 if (classInfo != null) {
                     try {
                         Class<?> classObj = FileUtils.loadClass(classInfo.getName());
                         if (classObj != null) {
-                            BiomeGenBase biomeObj = (BiomeGenBase) classObj.getDeclaredConstructor().newInstance();
+                            MobSpawnerBase biomeObj = (MobSpawnerBase) classObj.getDeclaredConstructor().newInstance();
                             if (!biomeTypes.contains(biomeObj)) {
                                 biomeTypes.add(biomeObj);
                             }
@@ -210,7 +210,7 @@ private List<BiomeGenBase> getBiomeTypes() {
 
     @Override
     public void getInternalData() {
-        for (BiomeGenBase biome : getBiomeTypes()) {
+        for (MobSpawnerBase biome : getBiomeTypes()) {
             if (biome != null) {
                 String biomeName = StringUtils.getOrDefault(biome.biomeName, MappingUtils.getClassName(biome));
                 String name = StringUtils.formatIdentifier(biomeName, true, !CraftPresence.CONFIG.advancedSettings.formatWords);
diff --git a/gradle.properties b/gradle.properties
index d40bf15ac..e0c7a6344 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -11,10 +11,10 @@ enabled_platforms=fabric,modloader
 isLegacy=true
 isJarMod=true
 # Mapping Info
-mc_mappings=3.1-b1.5_01
+mc_mappings=3.0-b1.4_01
 mc_mappings_type=mcp
-mc_version=b1.5_01
-mc_protocol=11
+mc_version=b1.4_01
+mc_protocol=10
 display_version=
 # Fabric Info
 fabric_loader_version=0.16.9
@@ -22,9 +22,9 @@ fabric_api_version=
 fabric_game_version_range=*
 fabric_loader_version_range=>=0.13.0
 # Forge Info
-forge_version=b1.5_01+build.4
+forge_version=b1.4_01
 fml_version_range=
-forge_game_version_range=b1.5_01
+forge_game_version_range=b1.4_01
 forge_loader_version_range=
 # Deployment Info
 versionId=2.5.2