diff --git a/box.json b/box.json
index 6d59f39d..b1faa3d9 100644
--- a/box.json
+++ b/box.json
@@ -36,6 +36,14 @@
         "node_modules",
         "pix"
       ]
+    },
+    {
+      "in": "vendor/squizlabs/php_codesniffer",
+      "name": [
+        "phpcs",
+        "phpcbf",
+        "CodeSniffer.conf"
+      ]
     }
   ],
   "compactors": "KevinGH\\Box\\Compactor\\Php",
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 91d43b25..566ed1b0 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -9,6 +9,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 The format of this change log follows the advice given at [Keep a CHANGELOG](http://keepachangelog.com).
 
 ## [Unreleased]
+### Fixed
+- Fix the `mustache` command to work from within the PHAR archive.
+- Fix the `phpcs` and `phpcbf` commands to work from within the PHAR archive.
+
 ## [4.1.3] - 2023-09-08
 ### Changed
 - Updated project dependencies to current [moodle-cs](https://github.com/moodlehq/moodle-cs), [moodle-local_moodlecheck](https://github.com/moodlehq/moodle-local_moodlecheck) and [moodle-local_ci](https://github.com/moodlehq/moodle-local_ci) versions. Also, to various internal / development tools.
diff --git a/src/Command/CodeCheckerCommand.php b/src/Command/CodeCheckerCommand.php
index 8fc34fdb..6984051d 100644
--- a/src/Command/CodeCheckerCommand.php
+++ b/src/Command/CodeCheckerCommand.php
@@ -61,8 +61,22 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             return $this->outputSkip($output);
         }
 
-        $cmd = [
-            'php', __DIR__ . '/../../vendor/squizlabs/php_codesniffer/bin/phpcs',
+        $filesystem  = new Filesystem();
+        $pathToPHPCS = __DIR__ . '/../../vendor/squizlabs/php_codesniffer/bin/phpcs';
+        $pathToConf  = __DIR__ . '/../../vendor/squizlabs/php_codesniffer/CodeSniffer.conf';
+        $basicCMD    = ['php', $pathToPHPCS];
+        // If we are running phpcs within a PHAR, the command is different, and we need also to copy the .conf file.
+        // @codeCoverageIgnoreStart - This is not executed when running tests, only when within a PHAR.
+        if (\Phar::running() !== '') {
+            // Invoke phpcs from the PHAR (via include, own params after --).
+            $basicCMD = ['php', '-r', 'include "' . $pathToPHPCS . '";', '--'];
+            // Copy the .conf file to the directory where the PHAR is running. That way phpcs will find it.
+            $targetPathToConf = dirname(\Phar::running(false)) . '/CodeSniffer.conf';
+            $filesystem->copy($pathToConf, $targetPathToConf, true);
+        }
+        // @codeCoverageIgnoreEnd
+
+        $cmd = array_merge($basicCMD, [
             '--standard=' . ($input->getOption('standard') ?: 'moodle'),
             '--extensions=php',
             '-p',
@@ -73,7 +87,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             '--report-full',
             '--report-width=132',
             '--encoding=utf-8',
-        ];
+        ]);
 
         // If we aren't using the max-warnings option, then we can forget about warnings and tell phpcs
         // to ignore them for exit-code purposes (still they will be reported in the output).
@@ -98,6 +112,14 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         $process = $this->execute->passThroughProcess(new Process($cmd, $this->plugin->directory, null, null, null));
 
+        // If we are running phpcs within a PHAR, we need to remove the previously copied conf file.
+        // @codeCoverageIgnoreStart - This is not executed when running tests, only when within a PHAR.
+        if (\Phar::running() !== '') {
+            $targetPathToConf = dirname(\Phar::running(false)) . '/CodeSniffer.conf';
+            $filesystem->remove($targetPathToConf);
+        }
+        // @codeCoverageIgnoreEnd
+
         // If we aren't using the max-warnings option, process exit code is enough for us.
         if ($input->getOption('max-warnings') < 0) {
             return $process->isSuccessful() ? 0 : 1;
diff --git a/src/Command/CodeFixerCommand.php b/src/Command/CodeFixerCommand.php
index 0b0da88e..113e2996 100644
--- a/src/Command/CodeFixerCommand.php
+++ b/src/Command/CodeFixerCommand.php
@@ -15,6 +15,7 @@
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Process\Process;
 
@@ -42,8 +43,22 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             return $this->outputSkip($output);
         }
 
-        $cmd = [
-            'php', __DIR__ . '/../../vendor/squizlabs/php_codesniffer/bin/phpcbf',
+        $filesystem  = new Filesystem();
+        $pathToPHPCBF = __DIR__ . '/../../vendor/squizlabs/php_codesniffer/bin/phpcbf';
+        $pathToConf  = __DIR__ . '/../../vendor/squizlabs/php_codesniffer/CodeSniffer.conf';
+        $basicCMD    = ['php', $pathToPHPCBF];
+        // If we are running phpcs within a PHAR, the command is different, and we need also to copy the .conf file.
+        // @codeCoverageIgnoreStart - This is not executed when running tests, only when within a PHAR.
+        if (\Phar::running() !== '') {
+            // Invoke phpcbf from the PHAR (via include, own params after --).
+            $basicCMD = ['php', '-r', 'include "' . $pathToPHPCBF . '";', '--'];
+            // Copy the .conf file to the directory where the PHAR is running. That way phpcbf will find it.
+            $targetPathToConf = dirname(\Phar::running(false)) . '/CodeSniffer.conf';
+            $filesystem->copy($pathToConf, $targetPathToConf, true);
+        }
+        // @codeCoverageIgnoreEnd
+
+        $cmd = array_merge($basicCMD, [
             '--standard=' . ($input->getOption('standard') ?: 'moodle'),
             '--extensions=php',
             '-p',
@@ -54,7 +69,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             '--report-full',
             '--report-width=132',
             '--encoding=utf-8',
-        ];
+        ]);
 
         // Add the files to process.
         foreach ($files as $file) {
@@ -63,6 +78,14 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         $this->execute->passThroughProcess(new Process($cmd, $this->plugin->directory, null, null, null));
 
+        // If we are running phpcbf within a PHAR, we need to remove the previously copied conf file.
+        // @codeCoverageIgnoreStart - This is not executed when running tests, only when within a PHAR.
+        if (\Phar::running() !== '') {
+            $targetPathToConf = dirname(\Phar::running(false)) . '/CodeSniffer.conf';
+            $filesystem->remove($targetPathToConf);
+        }
+        // @codeCoverageIgnoreEnd
+
         return 0;
     }
 }