diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 71566601e..896887b49 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.16]
+        php: [8.0.18]
 
     steps:
       - name: Build and prepare PHP cache
@@ -31,7 +31,7 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.16]
+        php: [8.0.18]
 
     steps:
       - uses: actions/checkout@v2
@@ -69,7 +69,7 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.16]
+        php: [8.0.18]
 
     steps:
       - uses: actions/checkout@v2
@@ -107,7 +107,7 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.16]
+        php: [8.0.18]
 
     steps:
       - uses: actions/checkout@v2
@@ -147,7 +147,7 @@ jobs:
       fail-fast: false
       matrix:
         image: [ubuntu-20.04]
-        php: [8.0.16]
+        php: [8.0.18]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/changelogs/4.2.md b/changelogs/4.2.md
index 6451bfe88..96f849148 100644
--- a/changelogs/4.2.md
+++ b/changelogs/4.2.md
@@ -85,3 +85,25 @@ Released 1st April 2022.
 
 ## Fixes
 - Fixed buffer length underflow crash in `LoginPacket` handling.
+
+# 4.2.7
+Released 15th April 2022.
+
+## General
+- Added lots more documentation (in comments) about the `aliases` section in `pocketmine.yml`. You can read about this feature in the `aliases` section of the [updated `pocketmine.yml` template](/resources/pocketmine.yml).
+- Improved wording of documentation of `PlayerPreLoginEvent`.
+
+## Fixes
+- Fixed core server crash when a plugin causes another plugin to be disabled during a scheduled task.
+- Fixed core server crash when loading a plugin with an abstract main class.
+- Fixed ghost items in many interaction situations (most notably, using projectiles while looking at an entity or block).
+- Implemented a workaround for a client teleport bug which led to player positions not updating properly when using ender pearls.
+- Fixed buggy movement when teleporting the player during `PlayerToggleSneakEvent`, `PlayerToggleSprintEvent`, `PlayerToggleSwimEvent` and `PlayerToggleGlideEvent`.
+
+# 4.2.8
+Released 17th April 2022.
+
+## Fixes
+- Fixed a memory leak in RakLib which could result in a server crash when players stay online for a long time.
+- Fixed server crash when attempting to load a corrupted empty resource pack.
+- Fixed users with the same name with differerently cased letters being able to duplicate items (userdata is matched by case-insensitive name).
diff --git a/composer.json b/composer.json
index 780f4f7d4..7beb344cb 100644
--- a/composer.json
+++ b/composer.json
@@ -53,7 +53,7 @@
       "webmozart/path-util": "^2.3"
    },
    "require-dev": {
-      "phpstan/phpstan": "1.5.4",
+      "phpstan/phpstan": "1.5.6",
       "phpstan/phpstan-phpunit": "^1.1.0",
       "phpstan/phpstan-strict-rules": "^1.0.0",
       "phpunit/phpunit": "^9.2"
diff --git a/composer.lock b/composer.lock
index 815d44ed8..35a3bafb2 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": "7e7da4bafdfc9f2b9bfbb3dc7cda739c",
+    "content-hash": "312b0119034654b3c161ef945b29488e",
     "packages": [
         {
             "name": "adhocore/json-comment",
@@ -727,16 +727,16 @@
         },
         {
             "name": "pocketmine/raklib",
-            "version": "0.14.3",
+            "version": "0.14.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/RakLib.git",
-                "reference": "4798576fec0364266dce23b368a7fec5e5de7927"
+                "reference": "1ea8e3b95a1b6bf785dc27d76578657be4185f42"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/RakLib/zipball/4798576fec0364266dce23b368a7fec5e5de7927",
-                "reference": "4798576fec0364266dce23b368a7fec5e5de7927",
+                "url": "https://api.github.com/repos/pmmp/RakLib/zipball/1ea8e3b95a1b6bf785dc27d76578657be4185f42",
+                "reference": "1ea8e3b95a1b6bf785dc27d76578657be4185f42",
                 "shasum": ""
             },
             "require": {
@@ -748,7 +748,7 @@
                 "pocketmine/log": "^0.3.0 || ^0.4.0"
             },
             "require-dev": {
-                "phpstan/phpstan": "1.3.3",
+                "phpstan/phpstan": "1.5.4",
                 "phpstan/phpstan-strict-rules": "^1.0"
             },
             "type": "library",
@@ -764,9 +764,9 @@
             "description": "A RakNet server implementation written in PHP",
             "support": {
                 "issues": "https://github.com/pmmp/RakLib/issues",
-                "source": "https://github.com/pmmp/RakLib/tree/0.14.3"
+                "source": "https://github.com/pmmp/RakLib/tree/0.14.4"
             },
-            "time": "2022-01-10T21:29:48+00:00"
+            "time": "2022-04-17T18:42:17+00:00"
         },
         {
             "name": "pocketmine/raklib-ipc",
@@ -1819,16 +1819,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.5.4",
+            "version": "1.5.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "bbf68cae24f6dc023c607ea0f87da55dd9d55c2b"
+                "reference": "799dd8c2d2c9c704bb55d2078078cb970cf0f6d1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/bbf68cae24f6dc023c607ea0f87da55dd9d55c2b",
-                "reference": "bbf68cae24f6dc023c607ea0f87da55dd9d55c2b",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/799dd8c2d2c9c704bb55d2078078cb970cf0f6d1",
+                "reference": "799dd8c2d2c9c704bb55d2078078cb970cf0f6d1",
                 "shasum": ""
             },
             "require": {
@@ -1854,7 +1854,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.5.4"
+                "source": "https://github.com/phpstan/phpstan/tree/1.5.6"
             },
             "funding": [
                 {
@@ -1874,7 +1874,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-04-03T12:39:00+00:00"
+            "time": "2022-04-15T11:13:37+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",
@@ -2766,16 +2766,16 @@
         },
         {
             "name": "sebastian/environment",
-            "version": "5.1.3",
+            "version": "5.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "388b6ced16caa751030f6a69e588299fa09200ac"
+                "reference": "1b5dff7bb151a4db11d49d90e5408e4e938270f7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/388b6ced16caa751030f6a69e588299fa09200ac",
-                "reference": "388b6ced16caa751030f6a69e588299fa09200ac",
+                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/1b5dff7bb151a4db11d49d90e5408e4e938270f7",
+                "reference": "1b5dff7bb151a4db11d49d90e5408e4e938270f7",
                 "shasum": ""
             },
             "require": {
@@ -2817,7 +2817,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/environment/issues",
-                "source": "https://github.com/sebastianbergmann/environment/tree/5.1.3"
+                "source": "https://github.com/sebastianbergmann/environment/tree/5.1.4"
             },
             "funding": [
                 {
@@ -2825,7 +2825,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-09-28T05:52:38+00:00"
+            "time": "2022-04-03T09:37:03+00:00"
         },
         {
             "name": "sebastian/exporter",
diff --git a/src/Server.php b/src/Server.php
index fff4d99c7..7c4202f9e 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -132,6 +132,7 @@ use function get_class;
 use function ini_set;
 use function is_array;
 use function is_dir;
+use function is_object;
 use function is_resource;
 use function is_string;
 use function json_decode;
@@ -1617,7 +1618,7 @@ class Server{
 						"reportPaste" => base64_encode($dump->getEncodedData())
 					], 10, [], $postUrlError);
 
-					if($reply !== null && ($data = json_decode($reply->getBody())) !== null){
+					if($reply !== null && is_object($data = json_decode($reply->getBody()))){
 						if(isset($data->crashId) && isset($data->crashUrl)){
 							$reportId = $data->crashId;
 							$reportUrl = $data->crashUrl;
diff --git a/src/network/mcpe/NetworkSession.php b/src/network/mcpe/NetworkSession.php
index f1faeb395..5ae77bff7 100644
--- a/src/network/mcpe/NetworkSession.php
+++ b/src/network/mcpe/NetworkSession.php
@@ -125,6 +125,7 @@ use function get_class;
 use function in_array;
 use function json_encode;
 use function ksort;
+use function strcasecmp;
 use function strlen;
 use function strtolower;
 use function substr;
@@ -635,7 +636,7 @@ class NetworkSession{
 				continue;
 			}
 			$info = $existingSession->getPlayerInfo();
-			if($info !== null && ($info->getUsername() === $this->info->getUsername() || $info->getUuid()->equals($this->info->getUuid()))){
+			if($info !== null && (strcasecmp($info->getUsername(), $this->info->getUsername()) === 0 || $info->getUuid()->equals($this->info->getUuid()))){
 				if($kickForXUIDMismatch($info instanceof XboxLivePlayerInfo ? $info->getXuid() : "")){
 					return;
 				}
diff --git a/src/resourcepacks/ZippedResourcePack.php b/src/resourcepacks/ZippedResourcePack.php
index d67a205fc..2ec39445b 100644
--- a/src/resourcepacks/ZippedResourcePack.php
+++ b/src/resourcepacks/ZippedResourcePack.php
@@ -64,6 +64,13 @@ class ZippedResourcePack implements ResourcePack{
 		if(!file_exists($zipPath)){
 			throw new ResourcePackException("File not found");
 		}
+		$size = filesize($zipPath);
+		if($size === false){
+			throw new ResourcePackException("Unable to determine size of file");
+		}
+		if($size === 0){
+			throw new ResourcePackException("Empty file, probably corrupted");
+		}
 
 		$archive = new \ZipArchive();
 		if(($openResult = $archive->open($zipPath)) !== true){