diff --git a/common/src/main/java/toughasnails/block/entity/ThermoregulatorBlockEntity.java b/common/src/main/java/toughasnails/block/entity/ThermoregulatorBlockEntity.java
index 44bec95d..47985678 100644
--- a/common/src/main/java/toughasnails/block/entity/ThermoregulatorBlockEntity.java
+++ b/common/src/main/java/toughasnails/block/entity/ThermoregulatorBlockEntity.java
@@ -263,6 +263,7 @@ public boolean isPassable(Level level, AreaFill.FillPos pos)
         if (changed)
         {
             setChanged(level, pos, state);
+            level.sendBlockUpdated(pos, state, state, 3);
         }
     }