diff --git a/src/Mapper/ArgumentsMapper.php b/src/Mapper/ArgumentsMapper.php
index e12011bb..8e1bde6f 100644
--- a/src/Mapper/ArgumentsMapper.php
+++ b/src/Mapper/ArgumentsMapper.php
@@ -8,8 +8,6 @@
 interface ArgumentsMapper
 {
     /**
-     * @pure
-     *
      * @return array<string, mixed>
      *
      * @throws MappingError
diff --git a/src/Mapper/Tree/Message/MessageBuilder.php b/src/Mapper/Tree/Message/MessageBuilder.php
index 943e1ed2..7a04810e 100644
--- a/src/Mapper/Tree/Message/MessageBuilder.php
+++ b/src/Mapper/Tree/Message/MessageBuilder.php
@@ -53,9 +53,6 @@ public static function newError(string $body): self
         return $instance;
     }
 
-    /**
-     * @psalm-pure
-     */
     public static function from(Throwable $error): ErrorMessage
     {
         if ($error instanceof ErrorMessage) {
@@ -119,8 +116,6 @@ public function parameters(): array
     }
 
     /**
-     * @psalm-pure
-     *
      * @return MessageType&HasCode&HasParameters
      */
     public function build(): Message&HasCode&HasParameters
diff --git a/src/Mapper/TreeMapper.php b/src/Mapper/TreeMapper.php
index 8da44254..503de2d4 100644
--- a/src/Mapper/TreeMapper.php
+++ b/src/Mapper/TreeMapper.php
@@ -8,8 +8,6 @@
 interface TreeMapper
 {
     /**
-     * @pure
-     *
      * @template T of object
      *
      * @param string|class-string<T> $signature
diff --git a/src/Mapper/TypeArgumentsMapper.php b/src/Mapper/TypeArgumentsMapper.php
index 465ec624..d5b47646 100644
--- a/src/Mapper/TypeArgumentsMapper.php
+++ b/src/Mapper/TypeArgumentsMapper.php
@@ -24,7 +24,6 @@ public function __construct(
         private Settings $settings,
     ) {}
 
-    /** @pure */
     public function mapArguments(callable $callable, mixed $source): array
     {
         $function = $this->functionDefinitionRepository->for($callable);
diff --git a/src/Mapper/TypeTreeMapper.php b/src/Mapper/TypeTreeMapper.php
index 6c0734ca..eb997694 100644
--- a/src/Mapper/TypeTreeMapper.php
+++ b/src/Mapper/TypeTreeMapper.php
@@ -23,7 +23,6 @@ public function __construct(
         private Settings $settings,
     ) {}
 
-    /** @pure */
     public function map(string $signature, mixed $source): mixed
     {
         $node = $this->node($signature, $source);
diff --git a/src/MapperBuilder.php b/src/MapperBuilder.php
index 48ffecc2..ab89726d 100644
--- a/src/MapperBuilder.php
+++ b/src/MapperBuilder.php
@@ -36,9 +36,6 @@ public function __construct()
      * using the given source. These arguments can then be used to decide which
      * implementation should be used.
      *
-     * The callback *must* be pure, its output must be deterministic.
-     * @see https://en.wikipedia.org/wiki/Pure_function
-     *
      * Example:
      *
      * ```php
@@ -57,7 +54,6 @@ public function __construct()
      * ```
      *
      * @param interface-string|class-string $name
-     * @psalm-param pure-callable $callback
      */
     public function infer(string $name, callable $callback): self
     {
@@ -86,9 +82,6 @@ public function infer(string $name, callable $callback): self
      * needs to be handled as well, the name of the class must be given to this
      * method.
      *
-     * A constructor *must* be pure, its output must be deterministic.
-     * @see https://en.wikipedia.org/wiki/Pure_function
-     *
      * ```php
      * final class SomeClass
      * {
@@ -200,7 +193,6 @@ public function infer(string $name, callable $callback): self
      *     ]);
      * ```
      *
-     * @psalm-param pure-callable|class-string ...$constructors
      * @param callable|class-string ...$constructors
      */
     public function registerConstructor(callable|string ...$constructors): self
@@ -298,7 +290,6 @@ public function withCache(CacheInterface $cache): self
 
     /**
      * @template T
-     * @psalm-param pure-callable(T): T $callback
      * @param callable(T): T $callback
      */
     public function alter(callable $callback): self
@@ -418,9 +409,6 @@ public function allowPermissiveTypes(): self
      * part of a query should never be allowed. Therefore, only an exhaustive
      * list of carefully chosen exceptions should be filtered.
      *
-     * The filter callback *must* be pure, its output must be deterministic.
-     * @see https://en.wikipedia.org/wiki/Pure_function
-     *
      * ```php
      * final class SomeClass
      * {
@@ -446,7 +434,6 @@ public function allowPermissiveTypes(): self
      *     ]);
      * ```
      *
-     * @psalm-param pure-callable(Throwable): ErrorMessage $filter
      * @param callable(Throwable): ErrorMessage $filter
      */
     public function filterExceptions(callable $filter): self
@@ -514,7 +501,6 @@ public function filterExceptions(callable $filter): self
      *     ->normalize('Hello world'); // HELLO WORLD?!
      * ```
      *
-     * @psalm-param pure-callable|class-string $transformer
      * @param callable|class-string $transformer
      */
     public function registerTransformer(callable|string $transformer, int $priority = 0): self