diff --git a/composer.json b/composer.json
index 990d09e..28d1ffa 100644
--- a/composer.json
+++ b/composer.json
@@ -26,5 +26,10 @@
 		"psr-4": {
 			"PdTests\\MonologModule\\": "tests"
 		}
+	},
+	"config": {
+		"allow-plugins": {
+			"dealerdirect/phpcodesniffer-composer-installer": true
+		}
 	}
 }
diff --git a/src/Processors/BlueScreenProcessor.php b/src/Processors/BlueScreenProcessor.php
index 1446f5d..199e65e 100644
--- a/src/Processors/BlueScreenProcessor.php
+++ b/src/Processors/BlueScreenProcessor.php
@@ -2,7 +2,7 @@
 
 namespace Pd\MonologModule\Processors;
 
-final class BlueScreenProcessor
+final class BlueScreenProcessor implements \Monolog\Processor\ProcessorInterface
 {
 
 	private \Tracy\BlueScreen $blueScreenRenderer;
diff --git a/src/Processors/ContextChannelProcessor.php b/src/Processors/ContextChannelProcessor.php
index d0b588c..17a4782 100644
--- a/src/Processors/ContextChannelProcessor.php
+++ b/src/Processors/ContextChannelProcessor.php
@@ -2,7 +2,7 @@
 
 namespace Pd\MonologModule\Processors;
 
-final class ContextChannelProcessor
+final class ContextChannelProcessor implements \Monolog\Processor\ProcessorInterface
 {
 
 	/**