--- a/net/minecraft/world/level/block/BlockCommand.java
+++ b/net/minecraft/world/level/block/BlockCommand.java
@@ -31,6 +31,8 @@
 import net.minecraft.world.phys.MovingObjectPositionBlock;
 import org.slf4j.Logger;
 
+import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
+
 public class BlockCommand extends BlockTileEntity implements GameMasterBlock {
 
     public static final MapCodec<BlockCommand> CODEC = RecordCodecBuilder.mapCodec((instance) -> {
@@ -78,6 +80,15 @@
 
     private void setPoweredAndUpdate(World world, BlockPosition blockposition, TileEntityCommand tileentitycommand, boolean flag) {
         boolean flag1 = tileentitycommand.isPowered();
+        // CraftBukkit start
+        org.bukkit.block.Block bukkitBlock = world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+        int old = flag1 ? 15 : 0;
+        int current = flag ? 15 : 0;
+
+        BlockRedstoneEvent eventRedstone = new BlockRedstoneEvent(bukkitBlock, old, current);
+        world.getCraftServer().getPluginManager().callEvent(eventRedstone);
+        flag = eventRedstone.getNewCurrent() > 0;
+        // CraftBukkit end
 
         if (flag != flag1) {
             tileentitycommand.setPowered(flag);