diff --git a/.github/workflows/laravel.yml b/.github/workflows/laravel.yml
index 69a2aa1..3fc426e 100644
--- a/.github/workflows/laravel.yml
+++ b/.github/workflows/laravel.yml
@@ -26,6 +26,8 @@ jobs:
       run: php -r "file_exists('.env') || copy('.env.example', '.env');"
     - name: Install Dependencies
       run: composer install -q --no-ansi --no-interaction --no-scripts --no-progress --prefer-dist
+    - name: Run Static Analysis
+      run: vendor/bin/phpstan analyse --memory-limit=512M
     - name: Execute tests (Unit and Feature tests) via PHPUnit
       run: vendor/bin/phpunit
     - name: Upload coverage reports to Codecov
diff --git a/composer.json b/composer.json
index 2aa4596..e9dc63d 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,8 @@
     ],
     "require-dev": {
         "orchestra/testbench": "^6.28",
-        "phpunit/phpunit": "^9.6"
+        "phpunit/phpunit": "^9.6",
+        "phpstan/phpstan": "^2.1"
     },
     "extra": {
         "laravel": {
@@ -36,12 +37,13 @@
     "scripts": {
         "test":"./vendor/bin/phpunit",
         "test-random-time-macros":"@test --filter RandomTimeMacros",
-        "test-random-date-macros":"@test --filter RandomDateMacrosTest"
+        "test-random-date-macros":"@test --filter RandomDateMacrosTest",
+        "static-analysis": "vendor/bin/phpstan analyse"
     },
     "minimum-stability": "stable",
     "prefer-stable": true,
     "require": {
-        "php": ">=7.4",
+        "php": ">=8.1",
         "paragonie/seedspring": "^1.2"
     }
 }
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..020db25
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,8 @@
+parameters:
+  level: 6
+  paths:
+      - src
+      - config
+
+  excludePaths:
+    - src/RNGs/MersenneTwister.php
diff --git a/src/Enums/RandomDateScheduleBasis.php b/src/Enums/RandomDateScheduleBasis.php
index 65fbe19..b266ff0 100644
--- a/src/Enums/RandomDateScheduleBasis.php
+++ b/src/Enums/RandomDateScheduleBasis.php
@@ -6,6 +6,7 @@
 
 class RandomDateScheduleBasis
 {
+    //TODO: Change to PHP 8.X Enum
     public const WEEK=10;
     public const MONTH=20;
 
@@ -32,6 +33,9 @@ public static function isValid(int $basis):bool{
         return in_array($basis,self::getAll());
     }
 
+    /**
+     * @return int[]
+     */
     public static function getAll():array{
         return[
             'WEEK'=>self::WEEK,
diff --git a/src/Exceptions/IncorrectRangeException.php b/src/Exceptions/IncorrectRangeException.php
index 586a0a5..cea4522 100644
--- a/src/Exceptions/IncorrectRangeException.php
+++ b/src/Exceptions/IncorrectRangeException.php
@@ -5,20 +5,27 @@
 class IncorrectRangeException extends \Exception
 {
 
-    private string $min;
-    private string $max;
-
     /**
      * @param string $min
      * @param string $max
      */
-    public function __construct(string $min, string $max)
+    public function __construct(private string $min, private string $max)
     {
-        $this->min = $min;
-        $this->max = $max;
-        $msg="${min} is bigger/later than ${max}! Please correct your parameters.";
+        $msg="{$this->getMin()} is bigger/later than {$this->getMax()}! Please correct your parameters.";
         parent::__construct($msg);
     }
 
+    public function getMax(): string
+    {
+        return $this->max;
+    }
+
+    public function getMin(): string
+    {
+        return $this->min;
+    }
+
+
+
 
 }
\ No newline at end of file
diff --git a/src/Exceptions/MissingSeedException.php b/src/Exceptions/MissingSeedException.php
index d9fe850..67eb065 100644
--- a/src/Exceptions/MissingSeedException.php
+++ b/src/Exceptions/MissingSeedException.php
@@ -2,8 +2,13 @@
 
 namespace Skywarth\ChaoticSchedule\Exceptions;
 
+use Throwable;
+
 class MissingSeedException extends \Exception
 {
-    protected $message='RNGAdapter is missing seed value! Set the seed first, before accessing';
+    public function __construct(string $message = 'RNGAdapter is missing seed value! Set the seed first, before accessing', int $code = 0, ?Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
 
 }
\ No newline at end of file
diff --git a/src/RNGs/Adapters/AbstractRNGAdapter.php b/src/RNGs/Adapters/AbstractRNGAdapter.php
index 615afce..56e36a1 100644
--- a/src/RNGs/Adapters/AbstractRNGAdapter.php
+++ b/src/RNGs/Adapters/AbstractRNGAdapter.php
@@ -10,7 +10,10 @@ abstract class AbstractRNGAdapter implements RandomNumberGeneratorAdapter
 
     protected int $seed;
 
-    public function __construct(int $seed=null)
+    /**
+     * @throws InvalidSeedFormatException
+     */
+    public function __construct(?int $seed=null)
     {
         if(!is_null($seed)){
             $this->setSeed($seed);
@@ -31,7 +34,9 @@ public function getSeed(): int
     }
 
 
-
+    /**
+     * @throws InvalidSeedFormatException
+     */
     public final function setSeed(int $seed):RandomNumberGeneratorAdapter
     {
         if(!$this->validateSeed($seed)){//Maybe another method for padding the missing bytes/length ?
diff --git a/src/RNGs/Adapters/RandomNumberGeneratorAdapter.php b/src/RNGs/Adapters/RandomNumberGeneratorAdapter.php
index 8f4c300..c13fe32 100644
--- a/src/RNGs/Adapters/RandomNumberGeneratorAdapter.php
+++ b/src/RNGs/Adapters/RandomNumberGeneratorAdapter.php
@@ -6,7 +6,7 @@
 
 interface RandomNumberGeneratorAdapter
 {
-    public function __construct(int $seed=null);//TODO: maybe make seed into string ?
+    public function __construct(?int $seed=null);//TODO: maybe make seed into string ?
 
     public function setSeed(int $seed):RandomNumberGeneratorAdapter;
     public function getSeed():int;
diff --git a/src/RNGs/Adapters/SeedSpringAdapter.php b/src/RNGs/Adapters/SeedSpringAdapter.php
index 1ce443d..71fb8d6 100644
--- a/src/RNGs/Adapters/SeedSpringAdapter.php
+++ b/src/RNGs/Adapters/SeedSpringAdapter.php
@@ -3,6 +3,7 @@
 namespace Skywarth\ChaoticSchedule\RNGs\Adapters;
 
 
+use Exception;
 use ParagonIE\SeedSpring\SeedSpring;
 
 class SeedSpringAdapter extends AbstractRNGAdapter
@@ -12,6 +13,9 @@ class SeedSpringAdapter extends AbstractRNGAdapter
     private SeedSpring $seedSpring;
 
 
+    /**
+     * @throws Exception
+     */
     public function intBetween(int $floor, int $ceil): int
     {
         //Boundaries are inclusive
@@ -32,12 +36,12 @@ public function validateSeed(int $seed): bool
     {
 
         // Check the length of the binary representation
-        return strlen($seed) === (self::PROVIDER_SEED_BYTES);
+        return strlen((string)$seed) === (self::PROVIDER_SEED_BYTES);
     }
 
     protected function setProviderSeed(int $seed): RandomNumberGeneratorAdapter
     {
-        $this->seedSpring=new SeedSpring($seed);
+        $this->seedSpring=new SeedSpring((string)$seed);
         return $this;
     }
 }
\ No newline at end of file
diff --git a/src/RNGs/RNGFactory.php b/src/RNGs/RNGFactory.php
index 80527fd..edae650 100644
--- a/src/RNGs/RNGFactory.php
+++ b/src/RNGs/RNGFactory.php
@@ -17,7 +17,6 @@ class RNGFactory
     public function __construct(string $rngEngineSlug)
     {
         $this->rngEngineSlug = $rngEngineSlug;
-        return $this;
     }
 
     /**
@@ -29,7 +28,7 @@ public function getRngEngineSlug(): string
     }
 
 
-    public function getRngEngine(int $seed=null):RandomNumberGeneratorAdapter{
+    public function getRngEngine(?int $seed=null):RandomNumberGeneratorAdapter{
         //TODO: array containing ::class for comparison, you don't really need if-else
         if($this->getRngEngineSlug()===MersenneTwisterAdapter::getAdapterSlug()){
             return new MersenneTwisterAdapter($seed);
diff --git a/src/Services/ChaoticSchedule.php b/src/Services/ChaoticSchedule.php
index 142df53..b644aa6 100644
--- a/src/Services/ChaoticSchedule.php
+++ b/src/Services/ChaoticSchedule.php
@@ -4,9 +4,8 @@
 
 use Carbon\Carbon;
 use Carbon\CarbonPeriod;
-use Carbon\Exceptions\InvalidFormatException;
+use Exception;
 use Illuminate\Console\Scheduling\Event;
-use Illuminate\Console\Scheduling\Schedule;
 use InvalidArgumentException;
 use LogicException;
 use OutOfRangeException;
@@ -70,7 +69,7 @@ public function getBasisDate():Carbon{
     /**
      * @throws IncompatibleClosureResponse
      */
-    private function validateClosureResponse($closureResponse, string $expected){
+    private function validateClosureResponse(mixed $closureResponse, string $expected):void {
         //TODO: expected should also be used as closure. Both applicable, closure and primitive types
         $type=gettype($closureResponse);
         if($type!==$expected){
@@ -107,7 +106,7 @@ public function randomTimeSchedule(Event $schedule, string $minTime, string $max
         try{
             $minTimeCasted=Carbon::createFromFormat('H:i',$minTime);
             $maxTimeCasted=Carbon::createFromFormat('H:i',$maxTime);
-        }catch (InvalidFormatException $ex){
+        }catch (Exception $ex){
             throw new InvalidDateFormatException("Given time format is invalid. minTime and maxTime parameters should be in 'H:i' format.",0,$ex);
         }
         if($minTimeCasted->isAfter($maxTimeCasted)){
@@ -140,7 +139,7 @@ public function randomTimeSchedule(Event $schedule, string $minTime, string $max
     public function randomMinuteSchedule(Event $schedule, int $minMinutes=0, int $maxMinutes=59, ?string $uniqueIdentifier=null,?callable $closure=null):Event{
 
         if($minMinutes>$maxMinutes){
-            throw new IncorrectRangeException($minMinutes,$maxMinutes);
+            throw new IncorrectRangeException((string)$minMinutes,(string)$maxMinutes);
         }
         if($minMinutes<0 || $maxMinutes>59){
             throw new OutOfRangeException('Provide min-max minute parameters between 0 and 59.');
@@ -190,7 +189,7 @@ public function randomMultipleMinutesSchedule(Event $schedule, int $minMinutes=0
         //TODO: merging this method and randomMinute() kinda makes sense, not sure if I should. Open to discussion.
 
         if($minMinutes>$maxMinutes){
-            throw new IncorrectRangeException($minMinutes,$maxMinutes);
+            throw new IncorrectRangeException((string)$minMinutes,(string)$maxMinutes);
         }
         if($minMinutes<0 || $maxMinutes>59){
             throw new OutOfRangeException('Provide min-max minute parameters between 0 and 59.');
@@ -199,7 +198,7 @@ public function randomMultipleMinutesSchedule(Event $schedule, int $minMinutes=0
             throw new LogicException('TimesMin and TimesMax has to be non-negative numbers!');//TODO: duplicate, refactor
         }
         if($timesMin>$timesMax){
-            throw new IncorrectRangeException($timesMin,$timesMax); //TODO: duplicate, refactor
+            throw new IncorrectRangeException((string)$timesMin,(string)$timesMax); //TODO: duplicate, refactor
         }
 
 
@@ -266,17 +265,19 @@ public function randomMultipleMinutesSchedule(Event $schedule, int $minMinutes=0
 
 
     /**
+     * @param int[] $daysOfTheWeek
      * @throws IncorrectRangeException
      * @throws InvalidScheduleBasisProvided
      * @throws IncompatibleClosureResponse|RunTimesExpectationCannotBeMet
      */
-    public function randomDaysSchedule(Event $schedule, int $periodType, ?array $daysOfTheWeek, int $timesMin, int $timesMax, ?string $uniqueIdentifier=null,?callable $closure=null):Event{
+    public function randomDaysSchedule(Event $schedule, int $periodType, ?array $daysOfTheWeek, int $timesMin, int $timesMax, ?string $uniqueIdentifier=null, ?callable $closure=null):Event{
         if(empty($daysOfTheWeek)){
             $daysOfTheWeek=self::ALL_DOW;
         }else{
             //Validate DOW
             foreach ($daysOfTheWeek as $dayNum){
-                if(gettype($dayNum)!=='integer'){
+                // @phpstan-ignore notIdentical.alwaysFalse
+                if(gettype($dayNum) !== 'integer'){
                     throw new InvalidArgumentException('daysOfTheWeek contains non-integer value! It should contain only integer values which represent days of the week.');
                 }
                 if(!in_array($dayNum,self::ALL_DOW)){
@@ -291,7 +292,7 @@ public function randomDaysSchedule(Event $schedule, int $periodType, ?array $day
             throw new LogicException('TimesMin and TimesMax has to be non-negative numbers!');
         }
         if($timesMin>$timesMax){
-            throw new IncorrectRangeException($timesMin,$timesMax);
+            throw new IncorrectRangeException((string)$timesMin,(string)$timesMax);
         }
 
         RandomDateScheduleBasis::validate($periodType);
@@ -460,6 +461,7 @@ private function registerAtRandomMacro(){
         Event::macro('atRandom', function (string $minTime, string $maxTime,?string $uniqueIdentifier=null,?callable $closure=null) use($chaoticSchedule){
             //Laravel automatically injects and replaces $this in the context
             /** @var Event $this */
+            // @phpstan-ignore varTag.nativeType
             return $chaoticSchedule->randomTimeSchedule($this,$minTime,$maxTime,$uniqueIdentifier,$closure);
 
         });
@@ -473,6 +475,7 @@ private function registerDailyAtRandomRandomMacro(){
         Event::macro('dailyAtRandom', function (string $minTime, string $maxTime,?string $uniqueIdentifier=null,?callable $closure=null) use($chaoticSchedule){
             //Laravel automatically injects and replaces $this in the context
             /** @var Event $this */
+            // @phpstan-ignore varTag.nativeType
             return $chaoticSchedule->randomTimeSchedule($this,$minTime,$maxTime,$uniqueIdentifier,$closure);
 
         });
@@ -486,6 +489,7 @@ private function registerHourlyAtRandomMacro(){
         Event::macro('hourlyAtRandom', function (int $minMinutes=0, int $maxMinutes=59,?string $uniqueIdentifier=null,?callable $closure=null) use($chaoticSchedule){
             //Laravel automatically injects and replaces $this in the context
             /** @var Event $this */
+            // @phpstan-ignore varTag.nativeType
             return $chaoticSchedule->randomMinuteSchedule($this,$minMinutes,$maxMinutes,$uniqueIdentifier,$closure);
 
         });
@@ -503,6 +507,7 @@ private function registerHourlyMultipleAtRandomMacro(){
         Event::macro('hourlyMultipleAtRandom', function (int $minMinutes=0, int $maxMinutes=59, int $timesMin=1, int $timesMax=1, ?string $uniqueIdentifier=null,?callable $closure=null) use($chaoticSchedule){
             //Laravel automatically injects and replaces $this in the context
             /** @var Event $this */
+            // @phpstan-ignore varTag.nativeType
             return $chaoticSchedule->randomMultipleMinutesSchedule($this,$minMinutes,$maxMinutes,$timesMin,$timesMax,$uniqueIdentifier,$closure);
 
         });
@@ -517,6 +522,7 @@ private function registerRandomDaysMacro(){
         Event::macro('randomDays', function (int $periodType, ?array $daysOfTheWeek, int $timesMin, int $timesMax, ?string $uniqueIdentifier=null,?callable $closure=null) use($chaoticSchedule){
             //Laravel automatically injects and replaces $this in the context
             /** @var Event $this */
+            // @phpstan-ignore varTag.nativeType
             return $chaoticSchedule->randomDaysSchedule($this,$periodType,$daysOfTheWeek,$timesMin,$timesMax,$uniqueIdentifier,$closure);
 
         });
diff --git a/src/Services/SeedGenerationService.php b/src/Services/SeedGenerationService.php
index 3e219a0..0f1ad5f 100644
--- a/src/Services/SeedGenerationService.php
+++ b/src/Services/SeedGenerationService.php
@@ -74,7 +74,7 @@ private function castToSeedFormat(string $hash):int{
 
     private function hash(string $raw):string{
         //return hash('crc32',$raw); //Produces hexadecimal format, containing characters.
-        return crc32($raw);
+        return (string)crc32($raw);
 
     }