diff --git a/.travis.yml b/.travis.yml
index 967121859..3cd2df454 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ language: php
 
 php:
  - 7.3
+ - 7.4
 
 before_script:
  - phpenv config-rm xdebug.ini
@@ -26,7 +27,7 @@ before_script:
  - pecl install channel://pecl.php.net/igbinary-3.1.2
  - git clone https://github.com/pmmp/pthreads.git
  - cd pthreads
- - git checkout 45579e1e622acd80f9c880f3a025ba3b98b8ebef
+ - git checkout e0f514dfde01c5e7e9cf94c43615918af482a45c
  - phpize
  - ./configure
  - make
diff --git a/src/player/Player.php b/src/player/Player.php
index c146068ca..6a2c6c4f4 100644
--- a/src/player/Player.php
+++ b/src/player/Player.php
@@ -1562,6 +1562,9 @@ class Player extends Human implements CommandSender, ChunkListener, IPlayer{
 		$target = $this->getWorld()->getBlock($pos);
 
 		$ev = new PlayerInteractEvent($this, $this->inventory->getItemInHand(), $target, null, $face, PlayerInteractEvent::LEFT_CLICK_BLOCK);
+		if($this->isSpectator()){
+			$ev->setCancelled();
+		}
 		$ev->call();
 		if($ev->isCancelled()){
 			return false;