diff --git a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/cable/ItemCableConfigMenu.kt b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/cable/ItemCableConfigMenu.kt
index 42305ff..f3fedce 100644
--- a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/cable/ItemCableConfigMenu.kt
+++ b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/cable/ItemCableConfigMenu.kt
@@ -36,9 +36,9 @@ class ItemCableConfigMenu(
         updateValues()
         
         insertFilterInventory = VirtualInventory(null, 1, arrayOf(insertFilter), intArrayOf(1))
-        insertFilterInventory.setPreUpdateHandler(::validateIsItemFilter)
+        insertFilterInventory.addPreUpdateHandler(::validateIsItemFilter)
         extractFilterInventory = VirtualInventory(null, 1, arrayOf(extractFilter), intArrayOf(1))
-        extractFilterInventory.setPreUpdateHandler(::validateIsItemFilter)
+        extractFilterInventory.addPreUpdateHandler(::validateIsItemFilter)
         
         gui = Gui.normal()
             .setStructure(
diff --git a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/itemfilter/ItemFilterMenu.kt b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/itemfilter/ItemFilterMenu.kt
index 00fcf5f..45872c2 100644
--- a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/itemfilter/ItemFilterMenu.kt
+++ b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/gui/itemfilter/ItemFilterMenu.kt
@@ -31,12 +31,12 @@ class ItemFilterMenu(
 ) {
     
     private val filterInventory = VirtualInventory(null, items.size, items, IntArray(items.size) {1}).apply { 
-        setPreUpdateHandler { event ->
+        addPreUpdateHandler { event ->
             event.isCancelled = true
             
             // disallow item filters in item filters
             if (event.newItem?.isItemFilter() == true)
-                return@setPreUpdateHandler
+                return@addPreUpdateHandler
                 
             if (event.isAdd || event.isSwap) {
                 putItem(UpdateReason.SUPPRESSED, event.slot, event.newItem!!.clone().apply { amount = 1} )
diff --git a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/StorageUnit.kt b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/StorageUnit.kt
index 24a7e90..bb20c9e 100644
--- a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/StorageUnit.kt
+++ b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/StorageUnit.kt
@@ -34,8 +34,8 @@ private val MAX_ITEMS by STORAGE_UNIT.config.entry<Int>("max_items")
 class StorageUnit(pos: BlockPos, state: NovaBlockState, data: Compound) : NetworkedTileEntity(pos, state, data) {
     
     private val inventory = StorageUnitInventory(storedValue("type", true, ItemStack::empty), storedValue("amount", true) { 0 })
-    private val inputInventory = VirtualInventory(null, 1).apply { setPreUpdateHandler(::handleInputInventoryUpdate) }
-    private val outputInventory = VirtualInventory(null, 1).apply { setPreUpdateHandler(::handlePreOutputInventoryUpdate); setPostUpdateHandler(::handlePostOutputInventoryUpdate) }
+    private val inputInventory = VirtualInventory(null, 1).apply { addPreUpdateHandler(::handleInputInventoryUpdate) }
+    private val outputInventory = VirtualInventory(null, 1).apply { addPreUpdateHandler(::handlePreOutputInventoryUpdate); addPostUpdateHandler(::handlePostOutputInventoryUpdate) }
     
     init {
         storedItemHolder(inventory to NetworkConnectionType.BUFFER)
diff --git a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/TrashCan.kt b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/TrashCan.kt
index 04c4e03..bccf12f 100644
--- a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/TrashCan.kt
+++ b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/TrashCan.kt
@@ -19,7 +19,7 @@ import java.util.*
 
 class TrashCan(pos: BlockPos, state: NovaBlockState, data: Compound) : NetworkedTileEntity(pos, state, data) {
     
-    private val inventory = VirtualInventory(1).apply { setPostUpdateHandler { setItem(UpdateReason.SUPPRESSED, 0, null) } }
+    private val inventory = VirtualInventory(1).apply { addPostUpdateHandler { setItem(UpdateReason.SUPPRESSED, 0, null) } }
     private val itemHolder = storedItemHolder(inventory to NetworkConnectionType.INSERT)
     private val fluidHolder = storedFluidHolder(VoidingFluidContainer to NetworkConnectionType.INSERT)
     
diff --git a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/VacuumChest.kt b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/VacuumChest.kt
index 9e8dcbe..766494a 100644
--- a/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/VacuumChest.kt
+++ b/logistics/src/main/kotlin/xyz/xenondevs/nova/addon/logistics/tileentity/VacuumChest.kt
@@ -63,7 +63,7 @@ class VacuumChest(pos: BlockPos, state: NovaBlockState, data: Compound) : Networ
         if (filter != null)
             filterInventory.setItem(SELF_UPDATE_REASON, 0, filter!!.toItemStack())
         
-        filterInventory.setPreUpdateHandler(::handleFilterInventoryUpdate)
+        filterInventory.addPreUpdateHandler(::handleFilterInventoryUpdate)
         filterInventory.guiPriority = 1
     }
     
diff --git a/simple-upgrades/src/main/kotlin/xyz/xenondevs/nova/addon/simpleupgrades/gui/UpgradesGui.kt b/simple-upgrades/src/main/kotlin/xyz/xenondevs/nova/addon/simpleupgrades/gui/UpgradesGui.kt
index 91ec510..569949e 100644
--- a/simple-upgrades/src/main/kotlin/xyz/xenondevs/nova/addon/simpleupgrades/gui/UpgradesGui.kt
+++ b/simple-upgrades/src/main/kotlin/xyz/xenondevs/nova/addon/simpleupgrades/gui/UpgradesGui.kt
@@ -34,7 +34,7 @@ private fun ItemStack.getUpgradeType(): UpgradeType<*>? =
 
 internal class UpgradesGui(val upgradeHolder: UpgradeHolder, openPrevious: (Player) -> Unit) {
     
-    private val input = VirtualInventory(null, 1).apply { setPreUpdateHandler(::handlePreInvUpdate); setPostUpdateHandler(::handlePostInvUpdate) }
+    private val input = VirtualInventory(null, 1).apply { addPreUpdateHandler(::handlePreInvUpdate); addPostUpdateHandler(::handlePostInvUpdate) }
     
     private val upgradeItems = ArrayList<Item>()