diff --git a/src/ncc/Classes/ExecutionUnitRunner.php b/src/ncc/Classes/ExecutionUnitRunner.php
index c82ce5e..6fad2e2 100644
--- a/src/ncc/Classes/ExecutionUnitRunner.php
+++ b/src/ncc/Classes/ExecutionUnitRunner.php
@@ -54,11 +54,11 @@
         {
             $bin = match($unit->getExecutionPolicy()->getRunner())
             {
-                Runners::PHP => (new ExecutableFinder())->find('php'),
-                Runners::BASH => (new ExecutableFinder())->find('bash'),
-                Runners::PYTHON => (new ExecutableFinder())->find('python'),
-                Runners::LUA => (new ExecutableFinder())->find('lua'),
-                Runners::PERL => (new ExecutableFinder())->find('perl'),
+                Runners::PHP->value => (new ExecutableFinder())->find('php'),
+                Runners::BASH->value => (new ExecutableFinder())->find('bash'),
+                Runners::PYTHON->value => (new ExecutableFinder())->find('python'),
+                Runners::LUA->value => (new ExecutableFinder())->find('lua'),
+                Runners::PERL->value => (new ExecutableFinder())->find('perl'),
 
                 default => throw new NotSupportedException(sprintf('The execution policy %s is not supported because it uses the %s runner', $unit->getExecutionPolicy()->getName(), $unit->getExecutionPolicy()->getRunner()))
             };
@@ -109,8 +109,8 @@
                 $execution_unit = ExecutionUnit::fromArray(ZiProto::decode(IO::fread($unit_path)));
                 return match ($execution_unit->getExecutionPolicy()->getRunner())
                 {
-                    Runners::PHP => PhpRunner::executeUnit($execution_unit, $args),
-                    Runners::BASH => BashRunner::executeUnit($execution_unit, $args),
+                    Runners::PHP->value => PhpRunner::executeUnit($execution_unit, $args),
+                    Runners::BASH->value => BashRunner::executeUnit($execution_unit, $args),
                     default => throw new NotSupportedException(sprintf('The execution policy %s is not supported because it uses the %s runner', $execution_unit->getExecutionPolicy()->getName(), $execution_unit->getExecutionPolicy()->getRunner())),
                 };
             }
@@ -138,8 +138,8 @@
             {
                 return match ($execution_unit->getExecutionPolicy()->getRunner())
                 {
-                    Runners::PHP => PhpRunner::executeUnit($execution_unit, $args, false),
-                    Runners::BASH => BashRunner::executeUnit($execution_unit, $args),
+                    Runners::PHP->value => PhpRunner::executeUnit($execution_unit, $args, false),
+                    Runners::BASH->value => BashRunner::executeUnit($execution_unit, $args),
                     default => throw new NotSupportedException(sprintf('The execution policy %s is not supported because it uses the %s runner', $execution_unit->getExecutionPolicy()->getName(), $execution_unit->getExecutionPolicy()->getRunner())),
                 };
             }
diff --git a/src/ncc/Classes/PhpExtension/PhpRunner.php b/src/ncc/Classes/PhpExtension/PhpRunner.php
index a818dd0..2f127f8 100644
--- a/src/ncc/Classes/PhpExtension/PhpRunner.php
+++ b/src/ncc/Classes/PhpExtension/PhpRunner.php
@@ -44,7 +44,7 @@
          */
         public static function executeUnit(ExecutionUnit $unit, array $args=[], bool $local=true): int
         {
-            if($unit->getExecutionPolicy()->getRunner() !== Runners::PHP)
+            if($unit->getExecutionPolicy()->getRunner() !== Runners::PHP->value)
             {
                 throw new InvalidArgumentException(sprintf('The execution unit %s is not a php execution unit', $unit->getExecutionPolicy()->getName()));
             }
diff --git a/src/ncc/Classes/PhpExtension/Templates/CliTemplate.php b/src/ncc/Classes/PhpExtension/Templates/CliTemplate.php
index cb54297..33d1e4e 100644
--- a/src/ncc/Classes/PhpExtension/Templates/CliTemplate.php
+++ b/src/ncc/Classes/PhpExtension/Templates/CliTemplate.php
@@ -49,7 +49,7 @@
         public static function applyTemplate(ProjectManager $project_manager): void
         {
             $project_manager->getProjectConfiguration()->addExecutionPolicy(
-                new ExecutionPolicy('main_policy', Runners::PHP, new ExecutionPolicy\Execute('main'))
+                new ExecutionPolicy('main_policy', Runners::PHP->value, new ExecutionPolicy\Execute('main'))
             );
 
             $project_manager->getProjectConfiguration()->getBuild()->setMain('main_policy');
diff --git a/src/ncc/Enums/Runners.php b/src/ncc/Enums/Runners.php
index e5e4ec3..ac07436 100644
--- a/src/ncc/Enums/Runners.php
+++ b/src/ncc/Enums/Runners.php
@@ -22,25 +22,15 @@
 
     namespace ncc\Enums;
 
-    final class Runners
+    enum Runners : string
     {
-        public const PHP = 'php';
+        case PHP = 'php';
 
-        public const BASH = 'bash';
+        case BASH = 'bash';
 
-        public const PYTHON = 'python';
+        case PYTHON = 'python';
 
-        public const PERL = 'perl';
+        case PERL = 'perl';
 
-        public const LUA = 'lua';
-
-        public const ALL = [
-            self::PHP,
-            self::BASH,
-            self::PYTHON,
-            self::PYTHON_3,
-            self::PYTHON_2,
-            self::PERL,
-            self::LUA
-        ];
+        case LUA = 'lua';
     }
\ No newline at end of file