diff --git a/composer.json b/composer.json
index ad2f2c680..6e9c121a2 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "jasny/twig-extensions": "^1.3",
         "knplabs/doctrine-behaviors": "^2.1",
         "knplabs/knp-menu-bundle": "^3.1",
-        "league/glide-symfony": "^1.0",
+        "league/glide-symfony": "^1.0.4",
         "miljar/php-exif": "^0.6.4",
         "nelexa/zip": "^3.3 || ^4.0",
         "nelmio/cors-bundle": "^2.1",
@@ -103,9 +103,9 @@
         "php-translation/loco-adapter": "^0.11",
         "phpspec/phpspec": "^6.3.1",
         "phpspec/prophecy": "^1.14",
-        "phpstan/phpstan": "^0.12",
-        "phpstan/phpstan-doctrine": "^0.12",
-        "phpstan/phpstan-symfony": "^0.12",
+        "phpstan/phpstan": "^1.2.0",
+        "phpstan/phpstan-doctrine": "^1.0",
+        "phpstan/phpstan-symfony": "^1.0.1",
         "phpunit/phpunit": "^8.5",
         "se/selenium-server-standalone": "^3.141",
         "symfony/browser-kit": "^5.3",
diff --git a/phpstan.neon b/phpstan.neon
index d40e0dbc7..0d9048055 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -33,13 +33,13 @@ parameters:
 
         # false positive: An item to the Logger's Record added by us isn't recognized
         -
-            message: "#Offset 'location' does not exist on array#"
+            message: "#Offset '.*' ([a-z ]*)on array#"
             path: %currentWorkingDirectory%/src/Log/LogHandler.php
 
-        # false positive: UserPasswordHasherInterface::isPasswordValid() given UserInterface
+        # False positive: `id` on Entities
         -
-        	message: '#UserPasswordHasherInterface::isPasswordValid\(\)#'
-        	path: %currentWorkingDirectory%/src/Security/LoginFormAuthenticator.php
+            message: '#Property Bolt\\Entity\\(.*)::\$id is never written, only read#'
+            path: %currentWorkingDirectory%/src/Entity/*
 
 includes:
 	- vendor/phpstan/phpstan-symfony/extension.neon
diff --git a/src/Api/Extensions/ContentExtension.php b/src/Api/Extensions/ContentExtension.php
index 31b168666..abb51291b 100644
--- a/src/Api/Extensions/ContentExtension.php
+++ b/src/Api/Extensions/ContentExtension.php
@@ -69,7 +69,7 @@ private function filterUnpublishedViewlessContent(QueryBuilder $queryBuilder): v
         $queryBuilder->setParameter('status', Statuses::PUBLISHED);
 
         //todo: Fix this when https://github.com/doctrine/orm/issues/3835 closed.
-        if (! empty($this->viewlessContentTypes)) {
+        if ($this->viewlessContentTypes->isNotEmpty()) {
             $queryBuilder->andWhere(sprintf('%s.contentType NOT IN (:cts)', $rootAlias));
             $queryBuilder->setParameter('cts', $this->viewlessContentTypes);
         }
@@ -82,7 +82,7 @@ private function filterUnpublishedViewlessFields(QueryBuilder $queryBuilder): vo
         $queryBuilder->setParameter('status', Statuses::PUBLISHED);
 
         //todo: Fix this when https://github.com/doctrine/orm/issues/3835 closed.
-        if (! empty($this->viewlessContentTypes)) {
+        if ($this->viewlessContentTypes->isNotEmpty()) {
             $queryBuilder->andWhere('c.contentType NOT IN (:cts)');
             $queryBuilder->setParameter('cts', $this->viewlessContentTypes);
         }
diff --git a/src/Cache/CachingTrait.php b/src/Cache/CachingTrait.php
index 45bdb7cf2..95f515118 100644
--- a/src/Cache/CachingTrait.php
+++ b/src/Cache/CachingTrait.php
@@ -48,7 +48,7 @@ public function setCacheKey(array $tokens): void
 
     public function getCacheKey(): string
     {
-        return $this->cacheKey ?? '';
+        return $this->cacheKey;
     }
 
     public function setCacheTags(array $tags): void
diff --git a/src/Command/CopyAssetsCommand.php b/src/Command/CopyAssetsCommand.php
index 364f31fc3..ddfefe225 100644
--- a/src/Command/CopyAssetsCommand.php
+++ b/src/Command/CopyAssetsCommand.php
@@ -77,7 +77,6 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             try {
                 $this->filesystem->remove($targetDir);
                 $this->hardCopy($originDir, $targetDir);
-
                 $rows[] = [sprintf('<fg=green;options=bold>%s</>', "\xE2\x9C\x94"), $message, 'copied'];
             } catch (\Throwable $e) {
                 $exitCode = 1;
@@ -85,14 +84,12 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             }
         }
 
-        if (! empty($rows)) {
-            $io->table(['', 'Folder', 'Method / Error'], $rows);
-        }
+        $io->table(['', 'Folder', 'Method / Error'], $rows);
 
         if ($exitCode !== 0) {
             $io->error('Some errors occurred while installing assets.');
         } else {
-            $io->success(! empty($rows) ? 'All assets were successfully installed.' : 'No assets were provided by any bundle.');
+            $io->success('All assets were successfully installed.');
         }
 
         return $exitCode;
diff --git a/src/Configuration/Content/FieldType.php b/src/Configuration/Content/FieldType.php
index f543ee3ba..f8b856152 100644
--- a/src/Configuration/Content/FieldType.php
+++ b/src/Configuration/Content/FieldType.php
@@ -22,7 +22,7 @@ public function __construct($items, ?string $slug = null)
         );
     }
 
-    private static function defaults(): Collection
+    protected static function defaults(): Collection
     {
         return new Collection([
             'slug' => '',
diff --git a/src/DataFixtures/ContentFixtures.php b/src/DataFixtures/ContentFixtures.php
index e5eff73e5..f05936640 100644
--- a/src/DataFixtures/ContentFixtures.php
+++ b/src/DataFixtures/ContentFixtures.php
@@ -247,7 +247,7 @@ function ($match) {
 
                             try {
                                 return $this->faker->{$match};
-                            } catch (\Throwable $e) {
+                            } finally {
                             }
 
                             return '(unknown)';
diff --git a/src/Doctrine/TablePrefixTrait.php b/src/Doctrine/TablePrefixTrait.php
index d4966a75a..ae49fb4c2 100644
--- a/src/Doctrine/TablePrefixTrait.php
+++ b/src/Doctrine/TablePrefixTrait.php
@@ -54,6 +54,6 @@ protected function setTablePrefixes($tablePrefixes, ManagerRegistry $managerRegi
      */
     protected function getTablePrefix(): string
     {
-        return current($this->tablePrefixes) ?? '';
+        return current($this->tablePrefixes);
     }
 }
diff --git a/src/Entity/Content.php b/src/Entity/Content.php
index 5ed36877d..d775d77eb 100644
--- a/src/Entity/Content.php
+++ b/src/Entity/Content.php
@@ -246,7 +246,6 @@ public function getSlug($locale = null): ?string
             return (string) $this->getId();
         }
 
-        $slug = null;
         if ($locale === null) {
             // get slug with locale the slug already has
             $slug = $this->getFieldValue('slug');
@@ -263,7 +262,7 @@ public function getSlug($locale = null): ?string
         }
 
         // if no slug exists for the current/requested locale, default fallback
-        if (! $slug && $this->hasField('slug')) {
+        if ($slug === '') {
             $field = $this->getField('slug');
 
             // @todo: Refactor this. Field.php should be able to get locale
diff --git a/src/Entity/Field/CollectionField.php b/src/Entity/Field/CollectionField.php
index 7c0ff9e56..ca2a5f6ac 100644
--- a/src/Entity/Field/CollectionField.php
+++ b/src/Entity/Field/CollectionField.php
@@ -56,7 +56,7 @@ public function getApiValue()
     }
 
     /**
-     * @var FieldInterface[]
+     * @param FieldInterface[] $fields
      */
     public function setValue($fields): Field
     {
diff --git a/src/Entity/Relation.php b/src/Entity/Relation.php
index 37972790e..668ff733a 100644
--- a/src/Entity/Relation.php
+++ b/src/Entity/Relation.php
@@ -116,7 +116,7 @@ public function setToContent($content): void
 
     public function getDefinition(): array
     {
-        if (empty($this->definition) === true && empty($this->fromContent) === false) {
+        if (empty($this->definition) && $this->fromContent instanceof Content) {
             $this->setDefinitionFromContentDefinition();
         }
 
diff --git a/src/Event/Listener/ContentFillListener.php b/src/Event/Listener/ContentFillListener.php
index 1ca872dec..8a5579c9a 100644
--- a/src/Event/Listener/ContentFillListener.php
+++ b/src/Event/Listener/ContentFillListener.php
@@ -82,7 +82,7 @@ private function guesstimateAuthor(): User
         return $this->users->getFirstAdminUser();
     }
 
-    private function guaranteeUniqueSLug(Content $content): void
+    private function guaranteeUniqueSlug(Content $content): void
     {
         $slug = $content->getSlug();
 
@@ -137,7 +137,7 @@ private function guaranteeUniqueSLug(Content $content): void
         if (! $safe) {
             $newSlug = $this->getSafeSlug($slug);
             $content->setFieldValue('slug', $newSlug);
-            $this->guaranteeUniqueSLug($content);
+            $this->guaranteeUniqueSlug($content);
         }
     }
 
diff --git a/src/Log/RequestProcessor.php b/src/Log/RequestProcessor.php
index 2b2e55df8..fd1e38b41 100644
--- a/src/Log/RequestProcessor.php
+++ b/src/Log/RequestProcessor.php
@@ -47,7 +47,7 @@ public function processRecord(array $record): array
             ];
         }
 
-        if (! empty($user)) {
+        if ($user instanceof User) {
             $record['user'] = [
                 'id' => $user->getId(),
                 'username' => $user->getUsername(),
diff --git a/src/Security/LoginFormAuthenticator.php b/src/Security/LoginFormAuthenticator.php
index 5870a8ef9..71c5aa7ce 100644
--- a/src/Security/LoginFormAuthenticator.php
+++ b/src/Security/LoginFormAuthenticator.php
@@ -111,11 +111,11 @@ public function getUser($credentials, UserProviderInterface $userProvider): ?Use
         return $this->userRepository->findOneByCredentials($credentials['username']);
     }
 
-    /**
-     * @var PasswordAuthenticatedUserInterface $user
-     */
     public function checkCredentials($credentials, UserInterface $user): bool
     {
+        /**
+         * @var PasswordAuthenticatedUserInterface $user
+         */
         return empty($credentials['password']) ? false : $this->passwordHasher->isPasswordValid($user, $credentials['password']);
     }
 
diff --git a/src/Security/LogoutListener.php b/src/Security/LogoutListener.php
index 24f384a2c..de488d813 100644
--- a/src/Security/LogoutListener.php
+++ b/src/Security/LogoutListener.php
@@ -18,15 +18,11 @@ class LogoutListener implements LogoutHandlerInterface
 {
     use LoggerTrait;
 
-    /** @var EntityManagerInterface */
-    private $em;
-
     /** @var SessionInterface */
     private $session;
 
-    public function __construct(EntityManagerInterface $em, SessionInterface $session)
+    public function __construct(SessionInterface $session)
     {
-        $this->em = $em;
         $this->session = $session;
     }
 
diff --git a/src/Twig/FieldExtension.php b/src/Twig/FieldExtension.php
index 80a59a706..60ea08483 100644
--- a/src/Twig/FieldExtension.php
+++ b/src/Twig/FieldExtension.php
@@ -109,7 +109,7 @@ public function getLabel(Field $field): string
 
     public function getType(Field $field): string
     {
-        return $field->getType() ?? $field->getDefinition()->get('type');
+        return $field->getType();
     }
 
     /**
@@ -119,7 +119,7 @@ public function getSelected(Field\SelectField $field, $returnsingle = false, $re
     {
         $definition = $field->getDefinition();
 
-        if ($definition->get('type') !== 'select' || ! $field->isContentSelect() || ($field->isContentSelect() && $definition->get('mode') === 'format')) {
+        if ($definition->get('type') !== 'select' || ! $field->isContentSelect() || $definition->get('mode') === 'format') {
             return $this->notifications->warning(
                 'Incorrect usage of `selected`-filter',
                 'The `selected`-filter can only be applied to a field of `type: select`, and it must be used as a selector for other content, and without `mode: format`.'
diff --git a/src/Twig/RelatedExtension.php b/src/Twig/RelatedExtension.php
index f267e2ddd..17ffafa41 100644
--- a/src/Twig/RelatedExtension.php
+++ b/src/Twig/RelatedExtension.php
@@ -8,8 +8,6 @@
 use Bolt\Entity\Content;
 use Bolt\Entity\Relation;
 use Bolt\Repository\RelationRepository;
-use Bolt\Storage\Query;
-use Bolt\Utils\ContentHelper;
 use Bolt\Utils\RelatedOptionsUtility;
 use Tightenco\Collect\Support\Collection;
 use Twig\Extension\AbstractExtension;
@@ -24,12 +22,6 @@ class RelatedExtension extends AbstractExtension
     /** @var Config */
     private $config;
 
-    /** @var Query */
-    private $query;
-
-    /** @var ContentHelper */
-    private $contentHelper;
-
     /** @var Notifications */
     private $notifications;
 
@@ -39,15 +31,11 @@ class RelatedExtension extends AbstractExtension
     public function __construct(
         RelationRepository $relationRepository,
         Config $config,
-        Query $query,
-        ContentHelper $contentHelper,
         Notifications $notifications,
         RelatedOptionsUtility $optionsUtility)
     {
         $this->relationRepository = $relationRepository;
         $this->config = $config;
-        $this->query = $query;
-        $this->contentHelper = $contentHelper;
         $this->notifications = $notifications;
         $this->optionsUtility = $optionsUtility;
     }
diff --git a/src/Twig/TextExtension.php b/src/Twig/TextExtension.php
index 1f2df8389..830307831 100644
--- a/src/Twig/TextExtension.php
+++ b/src/Twig/TextExtension.php
@@ -97,9 +97,7 @@ public function urlDecode(string $string)
         foreach (explode('&', $string) as $chunk) {
             $param = explode('=', $chunk);
 
-            if (! empty($param)) {
-                $params[urldecode($param[0])] = urldecode($param[1]);
-            }
+            $params[urldecode($param[0])] = urldecode($param[1]);
         }
 
         return $params;
diff --git a/src/Utils/Excerpt.php b/src/Utils/Excerpt.php
index 3d9d9061a..51dc71806 100644
--- a/src/Utils/Excerpt.php
+++ b/src/Utils/Excerpt.php
@@ -24,7 +24,7 @@ public static function getExcerpt(string $text, int $length = 200, $focus = null
      * Nothing exciting here. The array_unique is required, unless you decide
      * to make the words unique before passing in.
      */
-    private static function extractLocations(array $words, string $fulltext): array
+    protected static function extractLocations(array $words, string $fulltext): array
     {
         $locations = [];
         foreach ($words as $word) {
@@ -49,7 +49,7 @@ private static function extractLocations(array $words, string $fulltext): array
      * The only exception is where we have only two matches in which case we just take the
      * first as will be equally distant.
      */
-    private static function determineSnipLocation(array $locations, int $prevCount): int
+    protected static function determineSnipLocation(array $locations, int $prevCount): int
     {
         // If we only have 1 match we don't actually do the for loop so set to the first
         $startPos = (int) reset($locations);
@@ -84,7 +84,7 @@ private static function determineSnipLocation(array $locations, int $prevCount):
      *
      * @param string|array $words
      */
-    private static function extractRelevant($words, string $fulltext, int $relLength = 300): string
+    protected static function extractRelevant($words, string $fulltext, int $relLength = 300): string
     {
         $fulltext = strip_tags($fulltext);
 
diff --git a/src/Utils/LocaleHelper.php b/src/Utils/LocaleHelper.php
index 32d069aed..654d09a76 100644
--- a/src/Utils/LocaleHelper.php
+++ b/src/Utils/LocaleHelper.php
@@ -56,7 +56,7 @@ public function getCurrentLocale(Environment $twig): ?Collection
     {
         // Getting the currentLocale is surprisingly inefficient, so we do it once per Request
         // See https://github.com/bolt/core/pull/2597
-        if (! isset($this->currentLocale)) {
+        if (! $this->currentLocale instanceof Collection) {
             $this->currentLocale = $this->getLocales($twig)->firstWhere('current', true);
         }
 
diff --git a/src/Utils/MomentFormatConverter.php b/src/Utils/MomentFormatConverter.php
index 7336b1fc4..1a6f0dbba 100644
--- a/src/Utils/MomentFormatConverter.php
+++ b/src/Utils/MomentFormatConverter.php
@@ -18,7 +18,7 @@ class MomentFormatConverter
      *
      * @var array
      */
-    private static $formatConvertRules = [
+    protected static $formatConvertRules = [
         // year
         'yyyy' => 'YYYY',
         'yy' => 'YY',
diff --git a/src/Widget/BaseWidget.php b/src/Widget/BaseWidget.php
index acd9303c7..7d87a6df6 100644
--- a/src/Widget/BaseWidget.php
+++ b/src/Widget/BaseWidget.php
@@ -82,7 +82,7 @@ public function getTargets(): array
     }
 
     /**
-     * @var string[]
+     * @param string[] $targets
      */
     public function setTargets(array $targets): WidgetInterface
     {
diff --git a/src/Widget/Injector/HtmlInjector.php b/src/Widget/Injector/HtmlInjector.php
index 6c7201246..a5ca00766 100644
--- a/src/Widget/Injector/HtmlInjector.php
+++ b/src/Widget/Injector/HtmlInjector.php
@@ -80,7 +80,7 @@ public function inject(WidgetInterface $widget, Response $response): void
         $snippet = $widget() . "\n";
 
         // If the widget doesn't produce output, there's no need to inject it.
-        if (empty($snippet)) {
+        if (mb_strlen($snippet) === 0) {
             return;
         }
 
@@ -240,7 +240,7 @@ protected function jsTagsAfter(string $snippet, string $rawHtml): string
         return $result;
     }
 
-    private static function findTagStart(string $rawHtml, string $htmlTag): ?string
+    protected static function findTagStart(string $rawHtml, string $htmlTag): ?string
     {
         preg_match('~(<' . $htmlTag . '[^>]*?>)~mi', $rawHtml, $matches);
 
@@ -251,7 +251,7 @@ private static function findTagStart(string $rawHtml, string $htmlTag): ?string
         return $matches[1];
     }
 
-    private static function findTagEnd(string $rawHtml, string $htmlTag): ?string
+    protected static function findTagEnd(string $rawHtml, string $htmlTag): ?string
     {
         preg_match_all('~((<' . $htmlTag . '(\s[^>]*)?>)|(</' . $htmlTag . '>))~mi', $rawHtml, $allMatches);
 
diff --git a/src/Widget/Injector/RequestZone.php b/src/Widget/Injector/RequestZone.php
index 858c8e656..c3a932144 100644
--- a/src/Widget/Injector/RequestZone.php
+++ b/src/Widget/Injector/RequestZone.php
@@ -12,7 +12,7 @@
  */
 class RequestZone
 {
-    private const KEY = 'zone';
+    protected const KEY = 'zone';
 
     public const FRONTEND = 'frontend';
     public const BACKEND = 'backend';