diff --git a/gradle.properties b/gradle.properties
index 7804091..cdd2a67 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,8 +4,8 @@ org.gradle.parallel=true
 
 # Fabric Properties
 # check these on https://fabricmc.net/develop
-minecraft_version=1.19.1
-yarn_mappings=1.19.1+build.6
+minecraft_version=1.19
+yarn_mappings=1.19+build.4
 loader_version=0.16.2
 fabric_kotlin_version=1.12.0+kotlin.2.0.10
 
@@ -15,4 +15,4 @@ maven_group=com.enginemachiner.harmony
 archives_base_name=harmony
 
 # Dependencies
-fabric_version=0.58.5+1.19.1
\ No newline at end of file
+fabric_version=0.58.0+1.19
\ No newline at end of file
diff --git a/src/main/kotlin/com/enginemachiner/harmony/Item.kt b/src/main/kotlin/com/enginemachiner/harmony/Item.kt
index 9504347..98b7bd8 100644
--- a/src/main/kotlin/com/enginemachiner/harmony/Item.kt
+++ b/src/main/kotlin/com/enginemachiner/harmony/Item.kt
@@ -21,7 +21,7 @@ val hands = arrayOf( Hand.MAIN_HAND, Hand.OFF_HAND )
 
 fun handItem( player: PlayerEntity, kClass: KClass<*> ): ItemStack {
 
-    return player.handItems.find { kClass.isInstance( it.item ) }!!
+    return player.itemsHand.find { kClass.isInstance( it.item ) }!!
 
 }
 
@@ -86,7 +86,7 @@ interface StackScreen {
 
     fun canOpenScreen( player: PlayerEntity, stack: ItemStack ): Boolean {
 
-        val handStack = player.handItems.find { it != stack }!!
+        val handStack = player.itemsHand.find { it != stack }!!
 
         return handStack.item is AirBlockItem
 
diff --git a/src/main/kotlin/com/enginemachiner/harmony/NBT.kt b/src/main/kotlin/com/enginemachiner/harmony/NBT.kt
index 7088ce4..57f16bf 100644
--- a/src/main/kotlin/com/enginemachiner/harmony/NBT.kt
+++ b/src/main/kotlin/com/enginemachiner/harmony/NBT.kt
@@ -127,7 +127,7 @@ object NBT {
 
         val holder = stack.holder;      if ( holder !is PlayerEntity ) return
 
-        val i = holder.handItems.indexOf(stack)
+        val i = holder.itemsHand.indexOf(stack)
 
         putInt( nbt(stack), "Hand", i )