diff --git a/composer.json b/composer.json
index 882dff4..200ae39 100644
--- a/composer.json
+++ b/composer.json
@@ -20,15 +20,13 @@
     ],
     "require": {
         "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
-        "laminas/laminas-filter": "^2.37",
         "laminas/laminas-servicemanager": "^3.22",
         "laminas/laminas-validator": "^2.64"
     },
     "require-dev": {
         "phpunit/phpunit": "^10.2",
         "laminas/laminas-coding-standard": "^2.5",
-        "vimeo/psalm": "^5.13",
-        "ext-curl": "*"
+        "vimeo/psalm": "^5.13"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Filter/FilterInterface.php b/src/Filter/FilterInterface.php
index 3ceea26..d8a71dc 100644
--- a/src/Filter/FilterInterface.php
+++ b/src/Filter/FilterInterface.php
@@ -9,5 +9,5 @@ interface FilterInterface
     /**
      * Returns TRUE to accept the message, FALSE to block it.
      */
-    public function filter(array $event);
+    public function filter(array $event): bool|int|null;
 }
diff --git a/src/Filter/Priority.php b/src/Filter/Priority.php
index b78c214..0b05cb3 100644
--- a/src/Filter/Priority.php
+++ b/src/Filter/Priority.php
@@ -47,7 +47,7 @@ public function __construct(iterable|int $priority, ?string $operator = null)
     /**
      * Returns TRUE to accept the message, FALSE to block it.
      */
-    public function filter(array $event): null|bool|int
+    public function filter(array $event): bool|int|null
     {
         return version_compare((string) $event['priority'], (string) $this->priority, $this->operator);
     }
diff --git a/src/Formatter/Base.php b/src/Formatter/Base.php
index bce0f91..428f9ae 100644
--- a/src/Formatter/Base.php
+++ b/src/Formatter/Base.php
@@ -94,11 +94,11 @@ protected function normalize(mixed $value): mixed
         if ($value instanceof DateTime) {
             $value = $value->format($this->getDateTimeFormat());
         } elseif ($value instanceof Traversable) {
-            $value = @json_encode(iterator_to_array($value), $jsonFlags);
+            $value = json_encode(iterator_to_array($value), $jsonFlags);
         } elseif (is_array($value)) {
-            $value = @json_encode($value, $jsonFlags);
+            $value = json_encode($value, $jsonFlags);
         } elseif (is_object($value) && ! method_exists($value, '__toString')) {
-            $value = sprintf('object(%s) %s', $value::class, @json_encode($value));
+            $value = sprintf('object(%s) %s', $value::class, json_encode($value));
         } elseif (is_resource($value)) {
             $value = sprintf('resource(%s)', get_resource_type($value));
         } elseif (! is_object($value)) {
@@ -111,7 +111,7 @@ protected function normalize(mixed $value): mixed
     /**
      * {@inheritDoc}
      */
-    public function getDateTimeFormat()
+    public function getDateTimeFormat(): string
     {
         return $this->dateTimeFormat;
     }
@@ -119,9 +119,9 @@ public function getDateTimeFormat()
     /**
      * {@inheritDoc}
      */
-    public function setDateTimeFormat($dateTimeFormat): static
+    public function setDateTimeFormat(string $dateTimeFormat): static
     {
-        $this->dateTimeFormat = (string) $dateTimeFormat;
+        $this->dateTimeFormat = $dateTimeFormat;
         return $this;
     }
 }
diff --git a/src/Formatter/FormatterInterface.php b/src/Formatter/FormatterInterface.php
index bff4111..7b46042 100644
--- a/src/Formatter/FormatterInterface.php
+++ b/src/Formatter/FormatterInterface.php
@@ -24,12 +24,12 @@ public function format(iterable $event): iterable|string;
     /**
      * Get the format specifier for DateTime objects
      */
-    public function getDateTimeFormat();
+    public function getDateTimeFormat(): string;
 
     /**
      * Set the format specifier for DateTime objects
      *
      * @see http://php.net/manual/en/function.date.php
      */
-    public function setDateTimeFormat(string $dateTimeFormat);
+    public function setDateTimeFormat(string $dateTimeFormat): static;
 }
diff --git a/src/Formatter/Json.php b/src/Formatter/Json.php
index 02b4418..8afb4b1 100644
--- a/src/Formatter/Json.php
+++ b/src/Formatter/Json.php
@@ -33,7 +33,7 @@ public function format(iterable $event): string
             $event['timestamp'] = $event['timestamp']->format($this->getDateTimeFormat());
         }
 
-        return @json_encode(
+        return json_encode(
             $event,
             JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_NUMERIC_CHECK | JSON_PRESERVE_ZERO_FRACTION
         );
@@ -50,9 +50,9 @@ public function getDateTimeFormat(): string
     /**
      * {@inheritDoc}
      */
-    public function setDateTimeFormat($dateTimeFormat): static
+    public function setDateTimeFormat(string $dateTimeFormat): static
     {
-        $this->dateTimeFormat = (string) $dateTimeFormat;
+        $this->dateTimeFormat = $dateTimeFormat;
         return $this;
     }
 }
diff --git a/src/Manager/FilterPluginManager.php b/src/Manager/FilterPluginManager.php
index ef3dae8..27c90fd 100644
--- a/src/Manager/FilterPluginManager.php
+++ b/src/Manager/FilterPluginManager.php
@@ -12,7 +12,6 @@
 use Laminas\ServiceManager\AbstractPluginManager;
 use Laminas\ServiceManager\Exception\InvalidServiceException;
 use Laminas\ServiceManager\Factory\InvokableFactory;
-use Psr\Container\ContainerInterface;
 
 use function gettype;
 use function is_object;
@@ -51,11 +50,6 @@ class FilterPluginManager extends AbstractPluginManager
      */
     protected $sharedByDefault = false;
 
-    public function __construct(ContainerInterface $container, array $config = [])
-    {
-        parent::__construct($container, $config);
-    }
-
     /**
      * Validate the plugin is of the expected type.
      *
diff --git a/src/Manager/FormatterPluginManager.php b/src/Manager/FormatterPluginManager.php
index 1dc8871..f94a795 100644
--- a/src/Manager/FormatterPluginManager.php
+++ b/src/Manager/FormatterPluginManager.php
@@ -9,7 +9,6 @@
 use Laminas\ServiceManager\AbstractPluginManager;
 use Laminas\ServiceManager\Exception\InvalidServiceException;
 use Laminas\ServiceManager\Factory\InvokableFactory;
-use Psr\Container\ContainerInterface;
 
 use function gettype;
 use function is_object;
@@ -41,11 +40,6 @@ class FormatterPluginManager extends AbstractPluginManager
      */
     protected $sharedByDefault = false;
 
-    public function __construct(ContainerInterface $container, array $config = [])
-    {
-        parent::__construct($container, $config);
-    }
-
     /**
      * Validate the plugin is of the expected type.
      *
diff --git a/src/Manager/ProcessorPluginManager.php b/src/Manager/ProcessorPluginManager.php
index e0e9d6b..0eab386 100644
--- a/src/Manager/ProcessorPluginManager.php
+++ b/src/Manager/ProcessorPluginManager.php
@@ -12,7 +12,6 @@
 use Laminas\ServiceManager\AbstractPluginManager;
 use Laminas\ServiceManager\Exception\InvalidServiceException;
 use Laminas\ServiceManager\Factory\InvokableFactory;
-use Psr\Container\ContainerInterface;
 
 use function gettype;
 use function is_object;
@@ -50,11 +49,6 @@ class ProcessorPluginManager extends AbstractPluginManager
      */
     protected $sharedByDefault = false;
 
-    public function __construct(ContainerInterface $container, array $config = [])
-    {
-        parent::__construct($container, $config);
-    }
-
     /**
      * Validate the plugin is of the expected type.
      *
diff --git a/src/Manager/WriterPluginManager.php b/src/Manager/WriterPluginManager.php
index c699820..adeb236 100644
--- a/src/Manager/WriterPluginManager.php
+++ b/src/Manager/WriterPluginManager.php
@@ -10,7 +10,6 @@
 use Dot\Log\Writer\WriterInterface;
 use Laminas\ServiceManager\AbstractPluginManager;
 use Laminas\ServiceManager\Exception\InvalidServiceException;
-use Psr\Container\ContainerInterface;
 
 use function gettype;
 use function is_object;
@@ -49,11 +48,6 @@ class WriterPluginManager extends AbstractPluginManager
      */
     protected $sharedByDefault = false;
 
-    public function __construct(ContainerInterface $container, array $config = [])
-    {
-        parent::__construct($container, $config);
-    }
-
     /**
      * Validate the plugin is of the expected type.
      *
diff --git a/src/Processor/ProcessorInterface.php b/src/Processor/ProcessorInterface.php
index 545bca2..7483f44 100644
--- a/src/Processor/ProcessorInterface.php
+++ b/src/Processor/ProcessorInterface.php
@@ -9,5 +9,5 @@ interface ProcessorInterface
     /**
      * Processes a log message before it is given to the writers
      */
-    public function process(array $event);
+    public function process(array $event): array;
 }
diff --git a/src/Writer/AbstractWriter.php b/src/Writer/AbstractWriter.php
index 79fa0b7..e656057 100644
--- a/src/Writer/AbstractWriter.php
+++ b/src/Writer/AbstractWriter.php
@@ -265,7 +265,7 @@ public function setConvertWriteErrorsToExceptions(bool $convertErrors): void
     /**
      * Perform shutdown activities such as closing open resources
      */
-    public function shutdown()
+    public function shutdown(): void
     {
     }
 
diff --git a/src/Writer/WriterInterface.php b/src/Writer/WriterInterface.php
index 6621fc5..d0b3992 100644
--- a/src/Writer/WriterInterface.php
+++ b/src/Writer/WriterInterface.php
@@ -22,10 +22,10 @@ public function setFormatter(FormatterInterface|string $formatter): WriterInterf
     /**
      * Write a log message
      */
-    public function write(array $event);
+    public function write(array $event): void;
 
     /**
      * Perform shutdown activities
      */
-    public function shutdown();
+    public function shutdown(): void;
 }
diff --git a/test/ConfigProviderTest.php b/test/ConfigProviderTest.php
index a6fabf6..4c4662f 100644
--- a/test/ConfigProviderTest.php
+++ b/test/ConfigProviderTest.php
@@ -45,7 +45,7 @@ public function testDependenciesHasAliases()
         $this->assertArrayHasKey(WriterPluginManager::class, $this->config['dependencies']['aliases']);
     }
 
-    public function testDependenciesHasAbstractFactories()
+    public function testDependenciesHasAbstractFactories(): void
     {
         $this->assertArrayHasKey('abstract_factories', $this->config['dependencies']);
     }
diff --git a/test/Factory/LoggerAbstractServiceFactoryTest.php b/test/Factory/LoggerAbstractServiceFactoryTest.php
index 8f0a05e..c34affc 100644
--- a/test/Factory/LoggerAbstractServiceFactoryTest.php
+++ b/test/Factory/LoggerAbstractServiceFactoryTest.php
@@ -38,7 +38,7 @@ protected function setUp(): void
     /**
      * @throws ContainerExceptionInterface
      */
-    public function testWillInstantiate()
+    public function testWillInstantiate(): void
     {
         $this->container
             ->method('has')
diff --git a/test/LoggerTest.php b/test/LoggerTest.php
index f81fa43..03a815a 100644
--- a/test/LoggerTest.php
+++ b/test/LoggerTest.php
@@ -135,8 +135,6 @@ public static function provideTestFilters(): array
             ['regex', ['regex' => '/[0-9]+/']],
         ];
 
-        // Conditionally enabled until laminas-validator is forwards-compatible
-        // with laminas-servicemanager v3.
         if (class_exists(Digits::class)) {
             $data[] = ['validator', ['validator' => new Digits()]];
         }
diff --git a/test/Mock.php b/test/Mock.php
index c603dd6..533f91f 100644
--- a/test/Mock.php
+++ b/test/Mock.php
@@ -10,17 +10,13 @@ class Mock extends AbstractWriter
 {
     /**
      * array of log events
-     *
-     * @var array
      */
-    public $events = [];
+    public array $events = [];
 
     /**
      * shutdown called?
-     *
-     * @var bool
      */
-    public $shutdown = false;
+    public bool $shutdown = false;
 
     /**
      * Write a message to the log.
@@ -32,10 +28,8 @@ public function doWrite(array $event): void
 
     /**
      * Record shutdown
-     *
-     * @return void
      */
-    public function shutdown()
+    public function shutdown(): void
     {
         $this->shutdown = true;
     }
diff --git a/test/MockFilter.php b/test/MockFilter.php
index a109635..dc86e56 100644
--- a/test/MockFilter.php
+++ b/test/MockFilter.php
@@ -10,10 +10,8 @@ class MockFilter implements FilterInterface
 {
     /**
      * array of log events
-     *
-     * @var array
      */
-    public $events = [];
+    public array $events = [];
 
     /**
      * Returns TRUE to accept the message
diff --git a/test/Processor/BackTraceTest.php b/test/Processor/BackTraceTest.php
index 2970229..49dcfca 100644
--- a/test/Processor/BackTraceTest.php
+++ b/test/Processor/BackTraceTest.php
@@ -16,18 +16,18 @@ protected function setUp(): void
         $this->subject = new Backtrace();
     }
 
-    public function testWillInstantiate()
+    public function testWillInstantiate(): void
     {
         $this->assertInstanceOf(Backtrace::class, $this->subject);
     }
 
-    public function testProcess()
+    public function testProcess(): void
     {
         $result = $this->subject->process([]);
         $this->assertArrayHasKey('extra', $result);
     }
 
-    public function testGetIgnoredNamespaces()
+    public function testGetIgnoredNamespaces(): void
     {
         $result = $this->subject->getIgnoredNamespaces();
         $this->assertIsArray($result);
diff --git a/test/Writer/StreamTest.php b/test/Writer/StreamTest.php
index 8aa8e90..eba06c5 100644
--- a/test/Writer/StreamTest.php
+++ b/test/Writer/StreamTest.php
@@ -10,8 +10,8 @@
 use Dot\Log\Writer\Stream;
 use ErrorException;
 use PHPUnit\Framework\TestCase;
+use stdClass;
 
-use function curl_init;
 use function fopen;
 
 class StreamTest extends TestCase
@@ -59,7 +59,7 @@ public function testWillNotInstantiateWithWrongResource(): void
     {
         $this->expectException(InvalidArgumentException::class);
         $this->expectExceptionMessage('Resource is not a stream nor a string; received "object"');
-        new Stream(['stream' => curl_init('url')]);
+        new Stream(['stream' => new stdClass()]);
     }
 
     /**