diff --git a/src/Analysis.php b/src/Analysis.php
index 50bd00e94..8451069d4 100644
--- a/src/Analysis.php
+++ b/src/Analysis.php
@@ -7,7 +7,6 @@
 namespace OpenApi;
 
 use OpenApi\Annotations as OA;
-use OpenApi\Processors\ProcessorInterface;
 
 /**
  * Result of the analyser.
@@ -405,11 +404,11 @@ public function split()
     /**
      * Apply the processor(s).
      *
-     * @param callable|ProcessorInterface|array<ProcessorInterface|callable> $processors One or more processors
+     * @param callable|array<callable> $processors One or more processors
      */
     public function process($processors = null): void
     {
-        if (is_array($processors) === false && is_callable($processors) || $processors instanceof ProcessorInterface) {
+        if (false === is_array($processors) && is_callable($processors)) {
             $processors = [$processors];
         }
 
diff --git a/src/Processors/AugmentParameters.php b/src/Processors/AugmentParameters.php
index fbe0f5792..e70a81f2a 100644
--- a/src/Processors/AugmentParameters.php
+++ b/src/Processors/AugmentParameters.php
@@ -14,7 +14,7 @@
 /**
  * Augments shared and operations parameters from docblock comments.
  */
-class AugmentParameters implements ProcessorInterface
+class AugmentParameters
 {
     use DocblockTrait;
 
diff --git a/src/Processors/AugmentProperties.php b/src/Processors/AugmentProperties.php
index 139168e28..01052183d 100644
--- a/src/Processors/AugmentProperties.php
+++ b/src/Processors/AugmentProperties.php
@@ -14,7 +14,7 @@
 /**
  * Use the property context to extract useful information and inject that into the annotation.
  */
-class AugmentProperties implements ProcessorInterface
+class AugmentProperties
 {
     use Concerns\DocblockTrait;
     use Concerns\RefTrait;
diff --git a/src/Processors/AugmentRefs.php b/src/Processors/AugmentRefs.php
index b120d2954..06c82905f 100644
--- a/src/Processors/AugmentRefs.php
+++ b/src/Processors/AugmentRefs.php
@@ -10,7 +10,7 @@
 use OpenApi\Annotations as OA;
 use OpenApi\Generator;
 
-class AugmentRefs implements ProcessorInterface
+class AugmentRefs
 {
     use Concerns\RefTrait;
 
diff --git a/src/Processors/AugmentRequestBody.php b/src/Processors/AugmentRequestBody.php
index 77733a755..132c316d1 100644
--- a/src/Processors/AugmentRequestBody.php
+++ b/src/Processors/AugmentRequestBody.php
@@ -13,7 +13,7 @@
 /**
  * Use the RequestBody context to extract useful information and inject that into the annotation.
  */
-class AugmentRequestBody implements ProcessorInterface
+class AugmentRequestBody
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/AugmentSchemas.php b/src/Processors/AugmentSchemas.php
index ebc4d0b7e..97d1b2af3 100644
--- a/src/Processors/AugmentSchemas.php
+++ b/src/Processors/AugmentSchemas.php
@@ -16,7 +16,7 @@
  *
  * Merges properties.
  */
-class AugmentSchemas implements ProcessorInterface
+class AugmentSchemas
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/AugmentTags.php b/src/Processors/AugmentTags.php
index 4a450b9c2..9093a1ae7 100644
--- a/src/Processors/AugmentTags.php
+++ b/src/Processors/AugmentTags.php
@@ -13,7 +13,7 @@
 /**
  * Ensures that all tags used on operations also exist in the global <code>tags</code> list.
  */
-class AugmentTags implements ProcessorInterface
+class AugmentTags
 {
     /** @var array<string> */
     protected array $whitelist = [];
diff --git a/src/Processors/BuildPaths.php b/src/Processors/BuildPaths.php
index 6d6d6ce45..84ed1006d 100644
--- a/src/Processors/BuildPaths.php
+++ b/src/Processors/BuildPaths.php
@@ -14,7 +14,7 @@
 /**
  * Build the openapi->paths using the detected `@OA\PathItem` and `@OA\Operation` (`@OA\Get`, `@OA\Post`, etc).
  */
-class BuildPaths implements ProcessorInterface
+class BuildPaths
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/CleanUnmerged.php b/src/Processors/CleanUnmerged.php
index 6b3e2147d..5a694f2de 100644
--- a/src/Processors/CleanUnmerged.php
+++ b/src/Processors/CleanUnmerged.php
@@ -9,7 +9,7 @@
 use OpenApi\Analysis;
 use OpenApi\Annotations as OA;
 
-class CleanUnmerged implements ProcessorInterface
+class CleanUnmerged
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/CleanUnusedComponents.php b/src/Processors/CleanUnusedComponents.php
index ecd4b0c62..035e1f9b7 100644
--- a/src/Processors/CleanUnusedComponents.php
+++ b/src/Processors/CleanUnusedComponents.php
@@ -13,7 +13,7 @@
 /**
  * Tracks the use of all <code>Components</code> and removed unused schemas.
  */
-class CleanUnusedComponents implements ProcessorInterface
+class CleanUnusedComponents
 {
     use Concerns\AnnotationTrait;
 
diff --git a/src/Processors/DocBlockDescriptions.php b/src/Processors/DocBlockDescriptions.php
index 59070fd34..974bc242d 100644
--- a/src/Processors/DocBlockDescriptions.php
+++ b/src/Processors/DocBlockDescriptions.php
@@ -16,7 +16,7 @@
  *
  * Use `null`, for example: `@Annotation(description=null)`, if you don't want the annotation to have a description.
  */
-class DocBlockDescriptions implements ProcessorInterface
+class DocBlockDescriptions
 {
     use Concerns\DocblockTrait;
 
diff --git a/src/Processors/ExpandClasses.php b/src/Processors/ExpandClasses.php
index 9ba659736..acee10541 100644
--- a/src/Processors/ExpandClasses.php
+++ b/src/Processors/ExpandClasses.php
@@ -17,7 +17,7 @@
  * - else
  *   => merge ancestor properties into the schema.
  */
-class ExpandClasses implements ProcessorInterface
+class ExpandClasses
 {
     use Concerns\MergePropertiesTrait;
 
diff --git a/src/Processors/ExpandEnums.php b/src/Processors/ExpandEnums.php
index c3ce831e7..8e712bc54 100644
--- a/src/Processors/ExpandEnums.php
+++ b/src/Processors/ExpandEnums.php
@@ -16,7 +16,7 @@
  *
  * Determines `schema`, `enum` and `type`.
  */
-class ExpandEnums implements ProcessorInterface
+class ExpandEnums
 {
     use Concerns\TypesTrait;
 
diff --git a/src/Processors/ExpandTraits.php b/src/Processors/ExpandTraits.php
index 5cd7e2a45..01090d119 100644
--- a/src/Processors/ExpandTraits.php
+++ b/src/Processors/ExpandTraits.php
@@ -15,7 +15,7 @@
  * - merge trait annotations/methods/properties into the schema if the trait does not have a schema itself
  * - inherit from the trait if it has a schema (allOf).
  */
-class ExpandTraits implements ProcessorInterface
+class ExpandTraits
 {
     use Concerns\MergePropertiesTrait;
 
diff --git a/src/Processors/MergeIntoComponents.php b/src/Processors/MergeIntoComponents.php
index 8a024f923..03dbaab9c 100644
--- a/src/Processors/MergeIntoComponents.php
+++ b/src/Processors/MergeIntoComponents.php
@@ -14,7 +14,7 @@
 /**
  * Merge reusable annotation into @OA\Schemas.
  */
-class MergeIntoComponents implements ProcessorInterface
+class MergeIntoComponents
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/MergeIntoOpenApi.php b/src/Processors/MergeIntoOpenApi.php
index 5611ba4f7..597cb14e7 100644
--- a/src/Processors/MergeIntoOpenApi.php
+++ b/src/Processors/MergeIntoOpenApi.php
@@ -14,7 +14,7 @@
 /**
  * Merge all @OA\OpenApi annotations into one.
  */
-class MergeIntoOpenApi implements ProcessorInterface
+class MergeIntoOpenApi
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/MergeJsonContent.php b/src/Processors/MergeJsonContent.php
index c52c1bfd5..ab8d804c3 100644
--- a/src/Processors/MergeJsonContent.php
+++ b/src/Processors/MergeJsonContent.php
@@ -14,7 +14,7 @@
 /**
  * Split JsonContent into Schema and MediaType.
  */
-class MergeJsonContent implements ProcessorInterface
+class MergeJsonContent
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/MergeXmlContent.php b/src/Processors/MergeXmlContent.php
index 1f491889e..45590dccd 100644
--- a/src/Processors/MergeXmlContent.php
+++ b/src/Processors/MergeXmlContent.php
@@ -14,7 +14,7 @@
 /**
  * Split XmlContent into Schema and MediaType.
  */
-class MergeXmlContent implements ProcessorInterface
+class MergeXmlContent
 {
     public function __invoke(Analysis $analysis)
     {
diff --git a/src/Processors/OperationId.php b/src/Processors/OperationId.php
index 84d7ac60b..bb874c27d 100644
--- a/src/Processors/OperationId.php
+++ b/src/Processors/OperationId.php
@@ -13,7 +13,7 @@
 /**
  * Generate the OperationId based on the context of the OpenApi annotation.
  */
-class OperationId implements ProcessorInterface
+class OperationId
 {
     protected bool $hash;
 
diff --git a/src/Processors/PathFilter.php b/src/Processors/PathFilter.php
index 079a098db..58716071e 100644
--- a/src/Processors/PathFilter.php
+++ b/src/Processors/PathFilter.php
@@ -16,7 +16,7 @@
  * If no `tags` or `paths` filters are set, no filtering is performed.
  * All filter (regular) expressions must be enclosed within delimiter characters as they are used as-is.
  */
-class PathFilter implements ProcessorInterface
+class PathFilter
 {
     use AnnotationTrait;
 
diff --git a/src/Processors/ProcessorInterface.php b/src/Processors/ProcessorInterface.php
deleted file mode 100644
index 67e8e820c..000000000
--- a/src/Processors/ProcessorInterface.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php declare(strict_types=1);
-
-/**
- * @license Apache 2.0
- */
-
-namespace OpenApi\Processors;
-
-/**
- * @deprecated
- */
-interface ProcessorInterface
-{
-}