diff --git a/src/Context/ValueDependency.php b/src/Context/ValueDependency.php
index 45bec1a8..67f1fc78 100644
--- a/src/Context/ValueDependency.php
+++ b/src/Context/ValueDependency.php
@@ -11,11 +11,11 @@
  */
 final class ValueDependency implements DependencyInterface
 {
-    private array $variants;
+    private readonly array $variants;
 
     public function __construct(
         private readonly string $name,
-        private mixed $value,
+        private readonly mixed $value,
         array $variants = null
     ) {
         $this->variants = $variants ?? [$value];
diff --git a/src/Processor/ContextProcessor.php b/src/Processor/ContextProcessor.php
index c896c4cc..01ed7cb3 100644
--- a/src/Processor/ContextProcessor.php
+++ b/src/Processor/ContextProcessor.php
@@ -17,7 +17,7 @@ final class ContextProcessor implements ProcessorInterface
     // Context injection pattern @{key|default}
     private const PATTERN = '/@\\{(?P<name>[a-z0-9_\\.\\-]+)(?: *\\| *(?P<default>[^}]+))?}/i';
 
-    private string $pattern;
+    private readonly string $pattern;
 
     public function __construct(string $pattern = null)
     {