diff --git a/.github/workflows/continuous_integration.yml b/.github/workflows/continuous_integration.yml
index 70810c4f37..7193e871f6 100644
--- a/.github/workflows/continuous_integration.yml
+++ b/.github/workflows/continuous_integration.yml
@@ -84,7 +84,7 @@ jobs:
           name: "codeCoverage"
           path: "build"
 
-      - uses: codecov/codecov-action@v3.1.1 # upload the coverage to codecov
+      - uses: codecov/codecov-action@v3.1.2 # upload the coverage to codecov
         with:
           fail_ci_if_error: true # optional (default = false)
         # Do not upload in forks, and only on php8, latest deps
diff --git a/phpstan.neon b/phpstan.neon
index 91de17ea0a..02fbe8e28d 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -11,6 +11,7 @@ parameters:
     level: 8
     checkGenericClassInNonGenericObjectType: false
     reportUnmatchedIgnoredErrors: false
+    treatPhpDocTypesAsCertain: false
     ignoreErrors:
         - "#PHPDoc tag \\@throws with type Psr\\\\Container\\\\ContainerExceptionInterface is not subtype of Throwable#"
         - "#Parameter .* of class ReflectionMethod constructor expects string(\\|null)?, object\\|string given.#"
diff --git a/src/Exceptions/GraphQLException.php b/src/Exceptions/GraphQLException.php
index ca706d1021..c874291a5c 100644
--- a/src/Exceptions/GraphQLException.php
+++ b/src/Exceptions/GraphQLException.php
@@ -10,8 +10,13 @@
 class GraphQLException extends Exception implements GraphQLExceptionInterface
 {
     /** @param array<string, mixed> $extensions */
-    public function __construct(string $message, int $code = 0, Throwable|null $previous = null, private string $category = 'Exception', private array $extensions = [])
-    {
+    public function __construct(
+        string $message,
+        int $code = 0,
+        Throwable|null $previous = null,
+        protected string $category = 'Exception',
+        protected array $extensions = [],
+    ) {
         parent::__construct($message, $code, $previous);
     }
 
diff --git a/src/GlobControllerQueryProvider.php b/src/GlobControllerQueryProvider.php
index 998044984f..05afa6476a 100644
--- a/src/GlobControllerQueryProvider.php
+++ b/src/GlobControllerQueryProvider.php
@@ -30,7 +30,7 @@
  */
 final class GlobControllerQueryProvider implements QueryProviderInterface
 {
-    /** @var array<string,string>|null */
+    /** @var array<int,string>|null */
     private array|null $instancesList = null;
     private ClassNameMapper $classNameMapper;
     private AggregateControllerQueryProvider|null $aggregateControllerQueryProvider = null;
@@ -73,9 +73,11 @@ private function getAggregateControllerQueryProvider(): AggregateControllerQuery
     private function getInstancesList(): array
     {
         if ($this->instancesList === null) {
-            $this->instancesList = $this->cacheContract->get('globQueryProvider', function () {
-                return $this->buildInstancesList();
-            });
+            $this->instancesList = $this->cacheContract->get(
+                'globQueryProvider',
+                fn () => $this->buildInstancesList(),
+            );
+
             if (! is_array($this->instancesList)) {
                 throw new InvalidArgumentException('The instance list returned is not an array. There might be an issue with your PSR-16 cache implementation.');
             }
diff --git a/src/Mappers/Root/MyCLabsEnumTypeMapper.php b/src/Mappers/Root/MyCLabsEnumTypeMapper.php
index 7ad0d1f9d8..c0c35aa168 100644
--- a/src/Mappers/Root/MyCLabsEnumTypeMapper.php
+++ b/src/Mappers/Root/MyCLabsEnumTypeMapper.php
@@ -34,18 +34,36 @@ class MyCLabsEnumTypeMapper implements RootTypeMapperInterface
     /** @var array<string, EnumType> */
     private array $cacheByName = [];
 
+    /** @var array<string, class-string<Enum>> */
+    private array|null $nameToClassMapping = null;
+
     /** @param NS[] $namespaces List of namespaces containing enums. Used when searching an enum by name. */
-    public function __construct(private readonly RootTypeMapperInterface $next, private readonly AnnotationReader $annotationReader, private readonly CacheInterface $cacheService, private readonly array $namespaces)
-    {
+    public function __construct(
+        private readonly RootTypeMapperInterface $next,
+        private readonly AnnotationReader $annotationReader,
+        private readonly CacheInterface $cacheService,
+        private readonly array $namespaces,
+    ) {
     }
 
-    public function toGraphQLOutputType(Type $type, OutputType|null $subType, ReflectionMethod|ReflectionProperty $reflector, DocBlock $docBlockObj): OutputType&\GraphQL\Type\Definition\Type
+    public function toGraphQLOutputType(
+        Type $type,
+        OutputType|null $subType,
+        ReflectionMethod|ReflectionProperty $reflector,
+        DocBlock $docBlockObj,
+    ): OutputType&\GraphQL\Type\Definition\Type
     {
         $result = $this->map($type);
         return $result ?? $this->next->toGraphQLOutputType($type, $subType, $reflector, $docBlockObj);
     }
 
-    public function toGraphQLInputType(Type $type, InputType|null $subType, string $argumentName, ReflectionMethod|ReflectionProperty $reflector, DocBlock $docBlockObj): InputType&\GraphQL\Type\Definition\Type
+    public function toGraphQLInputType(
+        Type $type,
+        InputType|null $subType,
+        string $argumentName,
+        ReflectionMethod|ReflectionProperty $reflector,
+        DocBlock $docBlockObj,
+    ): InputType&\GraphQL\Type\Definition\Type
     {
         $result = $this->map($type);
         return $result ?? $this->next->toGraphQLInputType($type, $subType, $argumentName, $reflector, $docBlockObj);
@@ -83,6 +101,7 @@ private function mapByClassName(string $enumClass): EnumType|null
         return $this->cacheByName[$type->name] = $this->cache[$enumClass] = $type;
     }
 
+
     private function getTypeName(ReflectionClass $refClass): string
     {
         $enumType = $this->annotationReader->getEnumTypeAnnotation($refClass);
@@ -131,9 +150,6 @@ public function mapNameToType(string $typeName): NamedType&\GraphQL\Type\Definit
         return $this->next->mapNameToType($typeName);
     }
 
-    /** @var array<string, class-string<Enum>> */
-    private array|null $nameToClassMapping = null;
-
     /**
      * Go through all classes in the defined namespaces and loads the cache.
      *
@@ -150,6 +166,7 @@ private function getNameToClassMapping(): array
                             continue;
                         }
 
+                        /** @var class-string<Enum> $className */
                         $nameToClassMapping[$this->getTypeName($classRef)] = $className;
                     }
                 }
diff --git a/src/Utils/Namespaces/NS.php b/src/Utils/Namespaces/NS.php
index cf15581051..21766b6757 100644
--- a/src/Utils/Namespaces/NS.php
+++ b/src/Utils/Namespaces/NS.php
@@ -30,21 +30,27 @@ final class NS
     private array|null $classes = null;
 
     /** @param string $namespace The namespace that contains the GraphQL types (they must have a `@Type` annotation) */
-    public function __construct(private readonly string $namespace, private readonly CacheInterface $cache, private readonly ClassNameMapper $classNameMapper, private readonly int|null $globTTL, private readonly bool $recursive)
-    {
+    public function __construct(
+        private readonly string $namespace,
+        private readonly CacheInterface $cache,
+        private readonly ClassNameMapper $classNameMapper,
+        private readonly int|null $globTTL,
+        private readonly bool $recursive,
+    ) {
     }
 
     /**
      * Returns the array of globbed classes.
      * Only instantiable classes are returned.
      *
-     * @return array<string,ReflectionClass<object>> Key: fully qualified class name
+     * @return array<class-string,ReflectionClass<object>> Key: fully qualified class name
      */
     public function getClassList(): array
     {
         if ($this->classes === null) {
             $this->classes = [];
             $explorer = new GlobClassExplorer($this->namespace, $this->cache, $this->globTTL, $this->classNameMapper, $this->recursive);
+            /** @var array<class-string, string> $classes Override class-explorer lib */
             $classes = $explorer->getClassMap();
             foreach ($classes as $className => $phpFile) {
                 if (! class_exists($className, false) && ! interface_exists($className, false)) {
@@ -66,6 +72,7 @@ public function getClassList(): array
             }
         }
 
+        // @phpstan-ignore-next-line - Not sure why we cannot annotate the $classes above
         return $this->classes;
     }