diff --git a/build/php b/build/php
index 9a042c559..58ea62d7c 160000
--- a/build/php
+++ b/build/php
@@ -1 +1 @@
-Subproject commit 9a042c55932564907c36ae454feeaac4b5213773
+Subproject commit 58ea62d7cab244edf4cf79db586118bb4a994eba
diff --git a/composer.json b/composer.json
index 0a17466fd..14f5046be 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
       "ext-openssl": "*",
       "ext-pcre": "*",
       "ext-phar": "*",
-      "ext-pthreads": "~3.2.0",
+      "ext-pthreads": "^4.0",
       "ext-reflection": "*",
       "ext-simplexml": "*",
       "ext-sockets": "*",
@@ -37,7 +37,7 @@
       "pocketmine/bedrock-protocol": "dev-master",
       "pocketmine/binaryutils": "^0.2.1",
       "pocketmine/callback-validator": "^1.0.2",
-      "pocketmine/classloader": "dev-master",
+      "pocketmine/classloader": "^0.2.0",
       "pocketmine/color": "^0.2.0",
       "pocketmine/errorhandler": "^0.3.0",
       "pocketmine/log": "^0.3.0",
diff --git a/composer.lock b/composer.lock
index 13b94ceaa..ece09d478 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "bdecbde60deb48450d1aa54d8839e692",
+    "content-hash": "3aab4c7b78ea85bf5e68e8b953cd9e1f",
     "packages": [
         {
             "name": "adhocore/json-comment",
@@ -387,31 +387,31 @@
         },
         {
             "name": "pocketmine/classloader",
-            "version": "dev-master",
+            "version": "0.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/ClassLoader.git",
-                "reference": "80226e0917be79ac3230606113e25134a31e6a85"
+                "reference": "49ea303993efdfb39cd302e2156d50aa78209e78"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/ClassLoader/zipball/80226e0917be79ac3230606113e25134a31e6a85",
-                "reference": "80226e0917be79ac3230606113e25134a31e6a85",
+                "url": "https://api.github.com/repos/pmmp/ClassLoader/zipball/49ea303993efdfb39cd302e2156d50aa78209e78",
+                "reference": "49ea303993efdfb39cd302e2156d50aa78209e78",
                 "shasum": ""
             },
             "require": {
-                "ext-pthreads": "~3.2.0",
+                "ext-pthreads": "~3.2.0 || ^4.0",
                 "ext-reflection": "*",
-                "php": "^7.2 || ^8.0"
+                "php": "^8.0"
             },
             "conflict": {
                 "pocketmine/spl": "<0.4"
             },
             "require-dev": {
                 "phpstan/extension-installer": "^1.0",
-                "phpstan/phpstan": "0.12.80",
+                "phpstan/phpstan": "0.12.99",
                 "phpstan/phpstan-strict-rules": "^0.12.4",
-                "phpunit/phpunit": "^8.5 || ^9.5"
+                "phpunit/phpunit": "^9.5"
             },
             "type": "library",
             "autoload": {
@@ -426,9 +426,9 @@
             "description": "Ad-hoc autoloading components used by PocketMine-MP",
             "support": {
                 "issues": "https://github.com/pmmp/ClassLoader/issues",
-                "source": "https://github.com/pmmp/ClassLoader/tree/master"
+                "source": "https://github.com/pmmp/ClassLoader/tree/0.2.0"
             },
-            "time": "2021-05-29T23:09:32+00:00"
+            "time": "2021-11-01T20:17:27+00:00"
         },
         {
             "name": "pocketmine/color",
@@ -549,20 +549,20 @@
         },
         {
             "name": "pocketmine/log-pthreads",
-            "version": "0.2.0",
+            "version": "0.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/LogPthreads.git",
-                "reference": "6be3445c48c62eba3922f987f000bb20c81d161f"
+                "reference": "26f51ed44b1884f6dd72c06a883d9d07613af4f1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/LogPthreads/zipball/6be3445c48c62eba3922f987f000bb20c81d161f",
-                "reference": "6be3445c48c62eba3922f987f000bb20c81d161f",
+                "url": "https://api.github.com/repos/pmmp/LogPthreads/zipball/26f51ed44b1884f6dd72c06a883d9d07613af4f1",
+                "reference": "26f51ed44b1884f6dd72c06a883d9d07613af4f1",
                 "shasum": ""
             },
             "require": {
-                "ext-pthreads": "~3.2.0",
+                "ext-pthreads": "~3.2.0 || ^4.0",
                 "php": "^7.4 || ^8.0",
                 "pocketmine/log": "^0.2.0 || ^0.3.0"
             },
@@ -587,9 +587,9 @@
             "description": "Logging components specialized for pthreads used by PocketMine-MP and related projects",
             "support": {
                 "issues": "https://github.com/pmmp/LogPthreads/issues",
-                "source": "https://github.com/pmmp/LogPthreads/tree/0.2.0"
+                "source": "https://github.com/pmmp/LogPthreads/tree/0.2.1"
             },
-            "time": "2021-05-18T22:15:28+00:00"
+            "time": "2021-11-01T20:41:37+00:00"
         },
         {
             "name": "pocketmine/math",
@@ -760,25 +760,25 @@
         },
         {
             "name": "pocketmine/snooze",
-            "version": "0.3.0",
+            "version": "0.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/Snooze.git",
-                "reference": "fe5b1dbf0d6267da882d1f67924772bd93db833d"
+                "reference": "0ac8fc2a781c419a1f64ebca4d5835028f59e29b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/Snooze/zipball/fe5b1dbf0d6267da882d1f67924772bd93db833d",
-                "reference": "fe5b1dbf0d6267da882d1f67924772bd93db833d",
+                "url": "https://api.github.com/repos/pmmp/Snooze/zipball/0ac8fc2a781c419a1f64ebca4d5835028f59e29b",
+                "reference": "0ac8fc2a781c419a1f64ebca4d5835028f59e29b",
                 "shasum": ""
             },
             "require": {
-                "ext-pthreads": ">=3.1.7dev",
+                "ext-pthreads": "~3.2.0 || ^4.0",
                 "php-64bit": "^7.3 || ^8.0"
             },
             "require-dev": {
                 "phpstan/extension-installer": "^1.0",
-                "phpstan/phpstan": "0.12.88",
+                "phpstan/phpstan": "0.12.99",
                 "phpstan/phpstan-strict-rules": "^0.12.4"
             },
             "type": "library",
@@ -794,9 +794,9 @@
             "description": "Thread notification management library for code using the pthreads extension",
             "support": {
                 "issues": "https://github.com/pmmp/Snooze/issues",
-                "source": "https://github.com/pmmp/Snooze/tree/0.3.0"
+                "source": "https://github.com/pmmp/Snooze/tree/0.3.1"
             },
-            "time": "2021-06-13T13:57:47+00:00"
+            "time": "2021-11-01T20:50:08+00:00"
         },
         {
             "name": "pocketmine/spl",
@@ -3494,7 +3494,6 @@
     "minimum-stability": "stable",
     "stability-flags": {
         "pocketmine/bedrock-protocol": 20,
-        "pocketmine/classloader": 20,
         "pocketmine/spl": 20
     },
     "prefer-stable": false,
@@ -3517,7 +3516,7 @@
         "ext-openssl": "*",
         "ext-pcre": "*",
         "ext-phar": "*",
-        "ext-pthreads": "~3.2.0",
+        "ext-pthreads": "^4.0",
         "ext-reflection": "*",
         "ext-simplexml": "*",
         "ext-sockets": "*",
diff --git a/src/PocketMine.php b/src/PocketMine.php
index f944d445d..551585bbb 100644
--- a/src/PocketMine.php
+++ b/src/PocketMine.php
@@ -116,8 +116,8 @@ namespace pocketmine {
 			if(substr_count($pthreads_version, ".") < 2){
 				$pthreads_version = "0.$pthreads_version";
 			}
-			if(version_compare($pthreads_version, "3.2.0") < 0){
-				$messages[] = "pthreads >= 3.2.0 is required, while you have $pthreads_version.";
+			if(version_compare($pthreads_version, "4.0.0") < 0 || version_compare($pthreads_version, "5.0.0") > 0){
+				$messages[] = "pthreads ^4.0.0 is required, while you have $pthreads_version.";
 			}
 		}
 
diff --git a/tests/gh-actions/build.sh b/tests/gh-actions/build.sh
index 2176d81bb..d70be7980 100755
--- a/tests/gh-actions/build.sh
+++ b/tests/gh-actions/build.sh
@@ -50,7 +50,7 @@ echo '"leveldb",,"https://github.com/pmmp/php-leveldb.git",,"--with-leveldb='$IN
 echo '"chunkutils2",,"https://github.com/pmmp/ext-chunkutils2.git",,,"extension",' >> share/php-build/extension/definition
 echo '"morton",,"https://github.com/pmmp/ext-morton.git",,,"extension",' >> share/php-build/extension/definition
 PHP_BUILD_INSTALL_EXTENSION="\
-pthreads=@a6afc0434f91c1e9541444aef6ac7a1f16c595be \
+pthreads=@4.0.0 \
 yaml=2.2.1 \
 leveldb=@60763a09bf5c7a10376d16e25b078b99a35c5c37 \
 chunkutils2=@0.3.1 \