diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 79d7bac..f87b6f4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,4 +17,4 @@ jobs:
   ci:
     uses: codenamephp/workflows.php/.github/workflows/ci.yml@1
     with:
-      php-versions: '["8.1","8.2"]'
+      php-versions: '["8.1","8.2","8.3"]'
diff --git a/.idea/deployer.crontab.iml b/.idea/deployer.crontab.iml
index e9e65a4..072c4c1 100644
--- a/.idea/deployer.crontab.iml
+++ b/.idea/deployer.crontab.iml
@@ -4,6 +4,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" packagePrefix="de\codenamephp\deployer\crontab\" />
       <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" packagePrefix="de\codenamephp\deployer\crontab\test\" />
+      <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/.cache" />
       <excludeFolder url="file://$MODULE_DIR$/.github" />
       <excludeFolder url="file://$MODULE_DIR$/.logs" />
diff --git a/.idea/php.xml b/.idea/php.xml
index 6306c0e..f4f21ad 100644
--- a/.idea/php.xml
+++ b/.idea/php.xml
@@ -31,8 +31,8 @@
   </component>
   <component name="PhpInterpreters">
     <interpreters>
-      <interpreter id="09850581-f167-4a3e-8a3f-f8e199b8c6aa" name="application" home="docker-compose://DATA" debugger_id="php.debugger.XDebug">
-        <remote_data INTERPRETER_PATH="php" HELPERS_PATH="/opt/.phpstorm_helpers" INITIALIZED="false" VALID="true" RUN_AS_ROOT_VIA_SUDO="false" DOCKER_ACCOUNT_NAME="Docker" DOCKER_COMPOSE_SERVICE_NAME="application" DOCKER_REMOTE_PROJECT_PATH="/opt/project">
+      <interpreter id="09850581-f167-4a3e-8a3f-f8e199b8c6aa" name="application" home="docker-compose://DATA" auto="false" debugger_id="php.debugger.XDebug">
+        <remote_data INTERPRETER_PATH="php" HELPERS_PATH="/opt/.phpstorm_helpers" VALID="true" RUN_AS_ROOT_VIA_SUDO="false" DOCKER_ACCOUNT_NAME="Docker" DOCKER_COMPOSE_SERVICE_NAME="application" DOCKER_REMOTE_PROJECT_PATH="/opt/project">
           <type_data command="EXEC" />
           <dockerComposeConfigurationPaths>
             <item value="$PROJECT_DIR$/docker-compose.yml" />
@@ -42,9 +42,98 @@
       </interpreter>
     </interpreters>
   </component>
+  <component name="PhpInterpretersPhpInfoCache">
+    <phpInfoCache>
+      <interpreter name="application">
+        <phpinfo binary_type="PHP" php_cli="/usr/local/bin/php" path_separator=":" version="8.3.1">
+          <additional_php_ini>/usr/local/etc/php/conf.d/98-webdevops.ini, /usr/local/etc/php/conf.d/99-docker.ini, /usr/local/etc/php/conf.d/apcu.ini, /usr/local/etc/php/conf.d/docker-fpm.ini, /usr/local/etc/php/conf.d/docker-php-ext-amqp.ini, /usr/local/etc/php/conf.d/docker-php-ext-bcmath.ini, /usr/local/etc/php/conf.d/docker-php-ext-bz2.ini, /usr/local/etc/php/conf.d/docker-php-ext-calendar.ini, /usr/local/etc/php/conf.d/docker-php-ext-exif.ini, /usr/local/etc/php/conf.d/docker-php-ext-gd.ini, /usr/local/etc/php/conf.d/docker-php-ext-gettext.ini, /usr/local/etc/php/conf.d/docker-php-ext-gmp.ini, /usr/local/etc/php/conf.d/docker-php-ext-imagick.ini, /usr/local/etc/php/conf.d/docker-php-ext-imap.ini, /usr/local/etc/php/conf.d/docker-php-ext-intl.ini, /usr/local/etc/php/conf.d/docker-php-ext-ldap.ini, /usr/local/etc/php/conf.d/docker-php-ext-mysqli.ini, /usr/local/etc/php/conf.d/docker-php-ext-opcache.ini, /usr/local/etc/php/conf.d/docker-php-ext-pcntl.ini, /usr/local/etc/php/conf.d/docker-php-ext-pdo_mysql.ini, /usr/local/etc/php/conf.d/docker-php-ext-pdo_pgsql.ini, /usr/local/etc/php/conf.d/docker-php-ext-pgsql.ini, /usr/local/etc/php/conf.d/docker-php-ext-shmop.ini, /usr/local/etc/php/conf.d/docker-php-ext-soap.ini, /usr/local/etc/php/conf.d/docker-php-ext-sockets.ini, /usr/local/etc/php/conf.d/docker-php-ext-sodium.ini, /usr/local/etc/php/conf.d/docker-php-ext-sysvmsg.ini, /usr/local/etc/php/conf.d/docker-php-ext-sysvsem.ini, /usr/local/etc/php/conf.d/docker-php-ext-sysvshm.ini, /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini, /usr/local/etc/php/conf.d/docker-php-ext-xsl.ini, /usr/local/etc/php/conf.d/docker-php-ext-zip.ini, /usr/local/etc/php/conf.d/memcached.ini, /usr/local/etc/php/conf.d/mongodb.ini, /usr/local/etc/php/conf.d/redis.ini, /usr/local/etc/php/conf.d/tideways.ini, /usr/local/etc/php/conf.d/vips.ini, /usr/local/etc/php/conf.d/xmlrpc.ini</additional_php_ini>
+          <configuration_file />
+          <configuration_options>
+            <configuration_option name="include_path" value=".:/usr/local/lib/php" />
+          </configuration_options>
+          <debuggers>
+            <debugger_info debugger="xdebug" debugger_version="3.3.1">
+              <debug_extensions />
+            </debugger_info>
+          </debuggers>
+          <loaded_extensions>
+            <extension name="Core" />
+            <extension name="PDO" />
+            <extension name="Phar" />
+            <extension name="Reflection" />
+            <extension name="SPL" />
+            <extension name="SimpleXML" />
+            <extension name="Zend OPcache" />
+            <extension name="amqp" />
+            <extension name="apcu" />
+            <extension name="bcmath" />
+            <extension name="bz2" />
+            <extension name="calendar" />
+            <extension name="ctype" />
+            <extension name="curl" />
+            <extension name="date" />
+            <extension name="dom" />
+            <extension name="exif" />
+            <extension name="fileinfo" />
+            <extension name="filter" />
+            <extension name="ftp" />
+            <extension name="gd" />
+            <extension name="gettext" />
+            <extension name="gmp" />
+            <extension name="hash" />
+            <extension name="iconv" />
+            <extension name="imagick" />
+            <extension name="imap" />
+            <extension name="intl" />
+            <extension name="json" />
+            <extension name="ldap" />
+            <extension name="libxml" />
+            <extension name="mbstring" />
+            <extension name="memcached" />
+            <extension name="mongodb" />
+            <extension name="mysqli" />
+            <extension name="mysqlnd" />
+            <extension name="openssl" />
+            <extension name="pcntl" />
+            <extension name="pcre" />
+            <extension name="pdo_mysql" />
+            <extension name="pdo_pgsql" />
+            <extension name="pdo_sqlite" />
+            <extension name="pgsql" />
+            <extension name="posix" />
+            <extension name="random" />
+            <extension name="readline" />
+            <extension name="redis" />
+            <extension name="session" />
+            <extension name="shmop" />
+            <extension name="soap" />
+            <extension name="sockets" />
+            <extension name="sodium" />
+            <extension name="sqlite3" />
+            <extension name="standard" />
+            <extension name="sysvmsg" />
+            <extension name="sysvsem" />
+            <extension name="sysvshm" />
+            <extension name="tideways" />
+            <extension name="tokenizer" />
+            <extension name="vips" />
+            <extension name="xdebug" />
+            <extension name="xml" />
+            <extension name="xmlreader" />
+            <extension name="xmlrpc" />
+            <extension name="xmlwriter" />
+            <extension name="xsl" />
+            <extension name="zip" />
+            <extension name="zlib" />
+          </loaded_extensions>
+        </phpinfo>
+      </interpreter>
+    </phpInfoCache>
+  </component>
   <component name="PhpProjectSharedConfiguration" php_language_level="8.1" />
   <component name="PhpUnit">
     <phpunit_settings>
+      <PhpUnitSettings custom_loader_path="$PROJECT_DIR$/vendor/autoload.php" />
       <phpunit_by_interpreter interpreter_id="09850581-f167-4a3e-8a3f-f8e199b8c6aa" load_method="PHPUNIT_PHAR" configuration_file_path="/app/test/phpunit.dist.xml" custom_loader_path="/app/vendor/autoload.php" phpunit_phar_path="/app/tools/phpunit.phar" use_configuration_file="true" />
     </phpunit_settings>
   </component>
diff --git a/.idea/phpunit.xml b/.idea/phpunit.xml
new file mode 100644
index 0000000..4f8104c
--- /dev/null
+++ b/.idea/phpunit.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PHPUnit">
+    <option name="directories">
+      <list>
+        <option value="$PROJECT_DIR$/tests" />
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/docker/application/Dockerfile b/docker/application/Dockerfile
index db7acbc..d3b5997 100644
--- a/docker/application/Dockerfile
+++ b/docker/application/Dockerfile
@@ -1,4 +1,4 @@
-FROM webdevops/php-dev:8.2
+FROM webdevops/php-dev:8.3
 
 COPY --from=composer:2 /usr/bin/composer /usr/local/bin/composer
 COPY --from=phario/phive:0.15.2 /usr/local/bin/phive /usr/local/bin/phive
diff --git a/phive.xml b/phive.xml
index 746b4e5..1d90e76 100644
--- a/phive.xml
+++ b/phive.xml
@@ -17,7 +17,7 @@
   -->
 <phive xmlns="https://phar.io/phive">
   <phar name="phpunit" version="^10.0" location="./tools/phpunit.phar" copy="true" installed="10.0.16"/>
-  <phar name="psalm" version="^5.8" location="./tools/psalm" copy="true" installed="5.8.0"/>
+  <phar name="psalm" version="^5.8" location="./tools/psalm" copy="true" installed="5.20.0"/>
   <phar name="composer-unused" version="^0.8.6" location="./tools/composer-unused" copy="true" installed="0.8.7"/>
   <phar name="composer-require-checker" version="^4.5" location="./tools/composer-require-checker" copy="true" installed="4.5.0"/>
   <phar name="infection" version="^0.26" location="./tools/infection" copy="true" installed="0.26.19"/>
diff --git a/src/Task/AbstractCrontabCommand.php b/src/Task/AbstractCrontabCommand.php
index 5744afe..9e2fda1 100644
--- a/src/Task/AbstractCrontabCommand.php
+++ b/src/Task/AbstractCrontabCommand.php
@@ -47,7 +47,7 @@ public function __construct(
    */
   final public function getOptionsWithUser() : array {
     $options = $this instanceof HasOptionsInterface ? $this->getOptions() : [];
-    !$this->user ?: $options[] = "-u $this->user";
+    (string) $this->user !== ''  && $options[] = "-u $this->user";
     return $options;
   }
 
@@ -55,4 +55,4 @@ final public function __invoke() : void {
     $output = $this->commandRunner->run($this->crontabCommandFactory->build($this->getOptionsWithUser()));
     !$this instanceof HasOutputInteface ?: $this->writeln->writeln(PHP_EOL . $output);
   }
-}
\ No newline at end of file
+}
diff --git a/tools/psalm b/tools/psalm
index 1166330..42a174c 100755
Binary files a/tools/psalm and b/tools/psalm differ