diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..6c9c95a
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,14 @@
+
+
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: weekly
+      day: tuesday
+      time: "12:00"
diff --git a/.github/workflows/php-cs-fixer.yml b/.github/workflows/php-cs-fixer.yml
new file mode 100644
index 0000000..9ae75b4
--- /dev/null
+++ b/.github/workflows/php-cs-fixer.yml
@@ -0,0 +1,20 @@
+name: Check & fix styling
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  php-cs-fixer:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run PHP CS Fixer
+        uses: docker://oskarstark/php-cs-fixer-ga
+        with:
+          args: --config=ruleset-php_cs.php --allow-risky=yes --show-progress=dots --diff --dry-run
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
new file mode 100644
index 0000000..ce3784c
--- /dev/null
+++ b/.github/workflows/phpstan.yml
@@ -0,0 +1,26 @@
+name: PHPStan
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  phpstan:
+    name: phpstan
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.0'
+          coverage: none
+
+      - name: Install composer dependencies
+        uses: ramsey/composer-install@v3
+
+      - name: Run PHPStan
+        run: ./vendor/bin/phpstan --error-format=github analyse -c ruleset-phpstan.neon  -vvv
diff --git a/.github/workflows/rector.yaml b/.github/workflows/rector.yaml
new file mode 100644
index 0000000..c9ce0ae
--- /dev/null
+++ b/.github/workflows/rector.yaml
@@ -0,0 +1,37 @@
+name: Rector
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+
+jobs:
+  rector:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Rector Cache
+        uses: actions/cache@v3
+        with:
+          path: /tmp/rector
+          key: ${{ runner.os }}-rector-${{ github.run_id }}
+          restore-keys: ${{ runner.os }}-rector-
+
+      - run: mkdir -p /tmp/rector
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.0
+          coverage: none
+
+      - name: Install composer dependencies
+        uses: ramsey/composer-install@v3
+
+      - name: Rector Dry Run
+        run: php vendor/bin/rector process --dry-run --config=rector.php
+
+
diff --git a/ruleset-php_cs.php b/ruleset-php_cs.php
index 4a2fc97..2d2bd52 100644
--- a/ruleset-php_cs.php
+++ b/ruleset-php_cs.php
@@ -8,6 +8,7 @@
     'php_unit_method_casing' => ['case' => 'snake_case'],
     'elseif' => true,
     'phpdoc_align' => ['align' => 'left'],
+    'global_namespace_import' => true,
 ];
 
 $dirsToCheck = [
diff --git a/src/Calendar.php b/src/Calendar.php
index fc41202..c4edf31 100644
--- a/src/Calendar.php
+++ b/src/Calendar.php
@@ -5,10 +5,10 @@
 namespace benhall14\phpCalendar;
 
 use BadMethodCallException;
-use DateTimeInterface;
 use benhall14\phpCalendar\Views\Month;
 use benhall14\phpCalendar\Views\Week;
 use Carbon\Carbon;
+use DateTimeInterface;
 
 /**
  * Simple PHP Calendar Class.
@@ -146,7 +146,7 @@ public function addEvent(
      *     (optional) 'mask' => a masking class name.
      *     (optional) 'classes' => custom classes to include.
      *
-     * @param iterable<int, array{start: (string| DateTimeInterface), end: (string|DateTimeInterface), summary?: string, classes?: (string|list<string>), mask?: bool, event_box_classes?: (string|list<string>)}> $events the events array
+     * @param iterable<int, array{start: (string|DateTimeInterface), end: (string|DateTimeInterface), summary?: string, classes?: (string|list<string>), mask?: bool, event_box_classes?: (string|list<string>)}> $events the events array
      */
     public function addEvents(iterable $events): static
     {
diff --git a/src/Config.php b/src/Config.php
index 7229a56..d44598a 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -56,6 +56,9 @@ class Config
      */
     public array $hiddenDays = [];
 
+    /**
+     * @return list<string>
+     */
     public function getHiddenDays(): array
     {
         return array_intersect($this->hiddenDays, Carbon::getDays());
diff --git a/src/Views/Month.php b/src/Views/Month.php
index 266d58a..6cba354 100644
--- a/src/Views/Month.php
+++ b/src/Views/Month.php
@@ -7,6 +7,7 @@
 use benhall14\phpCalendar\Event;
 use Carbon\Carbon;
 use Carbon\CarbonInterface;
+use DateTimeInterface;
 
 class Month extends View
 {
@@ -22,7 +23,7 @@ protected function findEvents(CarbonInterface $start, CarbonInterface $end): arr
     /**
      * Returns the calendar as a month view.
      */
-    public function render(\DateTimeInterface|string|null $startDate = null, string $color = ''): string
+    public function render(DateTimeInterface|string|null $startDate = null, string $color = ''): string
     {
         $calendar = $this->makeHiddenStyles();
 
diff --git a/src/Views/View.php b/src/Views/View.php
index 0c983ee..1deab27 100644
--- a/src/Views/View.php
+++ b/src/Views/View.php
@@ -4,11 +4,11 @@
 
 namespace benhall14\phpCalendar\Views;
 
-use DateTimeInterface;
 use benhall14\phpCalendar\Calendar;
 use benhall14\phpCalendar\Config;
 use benhall14\phpCalendar\Event;
 use Carbon\CarbonInterface;
+use DateTimeInterface;
 
 abstract class View
 {
diff --git a/src/Views/Week.php b/src/Views/Week.php
index 3ad738a..7689c65 100644
--- a/src/Views/Week.php
+++ b/src/Views/Week.php
@@ -4,12 +4,12 @@
 
 namespace benhall14\phpCalendar\Views;
 
-use DateTimeInterface;
 use benhall14\phpCalendar\Event;
 use Carbon\Carbon;
 use Carbon\CarbonInterface;
 use Carbon\CarbonInterval;
 use Carbon\CarbonPeriod;
+use DateTimeInterface;
 
 class Week extends View
 {
@@ -98,6 +98,7 @@ protected function makeHeader(CarbonPeriod $carbonPeriod): string
             if ($this->config->dayShouldBeHidden($carbon)) {
                 continue;
             }
+
             $headerString .= '<th class="cal-th cal-th-'.strtolower($carbon->englishDayOfWeek).'">';
             $headerString .= '<div class="cal-weekview-dow">'.ucfirst($carbon->localeDayOfWeek).'</div>';
             $headerString .= '<div class="cal-weekview-day">'.$carbon->day.'</div>';