diff --git a/changelog.txt b/changelog.txt
index 801b57a..372d9ab 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,4 +1,10 @@
 ---------------------------------------------------------------------------------------------------
+Version: 0.4.21
+Date: 2023-02-03
+  Features:
+    - Compatibility with Warptorio2Expansion, can now repair broken lab to unlock research.
+      No copper cable or circuits required.
+---------------------------------------------------------------------------------------------------
 Version: 0.4.20
 Date: 2023-01-17
   Features:
diff --git a/control.lua b/control.lua
index 838f9aa..de60321 100644
--- a/control.lua
+++ b/control.lua
@@ -30,3 +30,39 @@ script.on_init(
   end
 )
 
+if script.active_mods["warptorio2_expansion"] then
+
+  function check_container_for_items(container,items)
+    local has_all =true
+    for k=1,#items do 
+      if container.get_item_count(items[k].name)<items[k].count then has_all=false break end
+    end
+    return has_all 		
+  end
+
+  function remove_items_from_container(container,items)
+    for k=1,#items do 
+      container.remove_item(items[k])
+    end	
+  end
+
+  script.on_nth_tick(60, function (event)
+    if global.done then return end
+    local fix_items={
+      {name='iron-plate',count=100},
+      {name='iron-gear-wheel',count=100},
+      {name='repair-pack',count=20},
+    }
+    local entities = game.surfaces[1].find_entities_filtered{area = {{-100, -100}, {100, 100}}, name = "wpe_broken_lab"}
+    if check_container_for_items(entities[1],fix_items) then
+      remove_items_from_container(entities[1],fix_items)
+      local lab = entities[1].surface.create_entity({name='wpe_repaired_lab', position=entities[1].position, force = game.forces.player})
+      lab.destructible=false
+      lab.minable=false
+      entities[1].destroy()
+      global.done = true
+    end
+  end)
+end
+
+
diff --git a/info.json b/info.json
index 36958f7..7a6601d 100644
--- a/info.json
+++ b/info.json
@@ -1,6 +1,6 @@
 {
     "name": "bzaluminum",
-    "version": "0.4.20",
+    "version": "0.4.21",
     "factorio_version": "1.1",
     "title": "Aluminum",
     "author": "Brevven",