diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index f9749bc..43ea87a 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -17,18 +17,35 @@ jobs:
 
   phpunit:
     runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        php-version: [ '7.4', '8.3', '8.4' ]
+
     env:
       CC_TEST_REPORTER_ID: ${{ secrets.CODE_CLIMATE_ID }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '7.4'
+          php-version: ${{ matrix.php-version }}
           coverage: xdebug
 
+      - name: Get composer cache directory
+        id: composer-cache
+        run: |
+          echo "dir=$(composer config cache-files-dir)" >> "$GITHUB_OUTPUT"
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+
       - name: Install Composer Dependencies
         run: composer install --no-progress --prefer-dist --optimize-autoloader
 
@@ -79,7 +96,7 @@ jobs:
           fi
 
       - name: Send Report
-        if: env.CC_TEST_REPORTER_ID != ''
+        if: env.CC_TEST_REPORTER_ID != '' && matrix.php-version == '7.4'
         run: |
           if [ -f clover.xml ]; then
             echo "Sending coverage report to CodeClimate..."
diff --git a/README.md b/README.md
index faa74bf..03bf570 100644
--- a/README.md
+++ b/README.md
@@ -298,10 +298,10 @@ $responsePayment = $ipagClient->payment()->getById($transactionId);
 $responsePayment = $ipagClient->payment()->getByUuid($transactionUuid);
 ```
 ```php
-$responsePayment = $ipagClient->payment()->getByUuid($transactionTid);
+$responsePayment = $ipagClient->payment()->getByTid($transactionTid);
 ```
 ```php
-$responsePayment = $ipagClient->payment()->getByUuid($orderId);
+$responsePayment = $ipagClient->payment()->getByOrderId($orderId);
 ```
 
 ### Capturar Pagamento
@@ -315,11 +315,11 @@ $responsePayment = $ipagClient->payment()->captureByUuid($transactionUuid, $amou
 ```
 ou
 ```php
-$responsePayment = $ipagClient->payment()->captureByUuid($transactionTid, $amount);
+$responsePayment = $ipagClient->payment()->captureByTid($transactionTid, $amount);
 ```
 ou
 ```php
-$responsePayment = $ipagClient->payment()->captureByUuid($orderId, $amount);
+$responsePayment = $ipagClient->payment()->captureByOrderId($orderId, $amount);
 ```
 
 ### Cancelar Pagamento
@@ -333,11 +333,11 @@ $responsePayment = $ipagClient->payment()->cancelByUuid($transactionUuid, $amoun
 ```
 ou
 ```php
-$responsePayment = $ipagClient->payment()->cancelByUuid($transactionTid, $amount);
+$responsePayment = $ipagClient->payment()->cancelByTid($transactionTid, $amount);
 ```
 ou
 ```php
-$responsePayment = $ipagClient->payment()->cancelByUuid($orderId, $amount);
+$responsePayment = $ipagClient->payment()->cancelByOrderId($orderId, $amount);
 ```
 
 > Todos os exemplos: [examples/payment/](https://github.com/ipagdevs/ipag-sdk-php/tree/master/examples/payment/)
diff --git a/src/Model/Address.php b/src/Model/Address.php
index 85c2c94..4542068 100644
--- a/src/Model/Address.php
+++ b/src/Model/Address.php
@@ -212,7 +212,7 @@ public function setState(?string $state): self
     }
     public function zipcode(): Mutator
     {
-        return new Mutator(null, fn ($value) => strval(preg_replace('/\D/', '', $value)));
+        return new Mutator(null, fn ($value) => strval(preg_replace('/\D/', '', $value ?? '')));
     }
 
     /**
diff --git a/src/Model/Attendee.php b/src/Model/Attendee.php
index 0e8a30d..29f85bf 100644
--- a/src/Model/Attendee.php
+++ b/src/Model/Attendee.php
@@ -39,11 +39,13 @@ protected function dob(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Bank.php b/src/Model/Bank.php
index 57f4270..8de2635 100644
--- a/src/Model/Bank.php
+++ b/src/Model/Bank.php
@@ -98,7 +98,7 @@ public function getAccount(): ?string
      * @param string|null $account
      * @return self
      */
-    public function setAccount(string $account = null): self
+    public function setAccount(?string $account = null): self
     {
         $this->set('account', $account);
         return $this;
diff --git a/src/Model/Boleto.php b/src/Model/Boleto.php
index 1e88e9e..92c09bc 100644
--- a/src/Model/Boleto.php
+++ b/src/Model/Boleto.php
@@ -39,11 +39,13 @@ protected function due_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Charge.php b/src/Model/Charge.php
index 2734943..6c885c1 100644
--- a/src/Model/Charge.php
+++ b/src/Model/Charge.php
@@ -91,11 +91,13 @@ protected function due_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
@@ -118,11 +120,13 @@ protected function last_charge_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Customer.php b/src/Model/Customer.php
index 8248b26..c5134c0 100644
--- a/src/Model/Customer.php
+++ b/src/Model/Customer.php
@@ -368,11 +368,13 @@ protected function birthdate(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+                
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
-
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Holder.php b/src/Model/Holder.php
index 4f6e8bf..88013f7 100644
--- a/src/Model/Holder.php
+++ b/src/Model/Holder.php
@@ -142,11 +142,13 @@ protected function birthdate(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Owner.php b/src/Model/Owner.php
index 5653090..2ead629 100644
--- a/src/Model/Owner.php
+++ b/src/Model/Owner.php
@@ -78,11 +78,13 @@ protected function birthdate(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/PaymentLinkV2/PaymentLinkV2.php b/src/Model/PaymentLinkV2/PaymentLinkV2.php
index 79297ce..e5d437b 100644
--- a/src/Model/PaymentLinkV2/PaymentLinkV2.php
+++ b/src/Model/PaymentLinkV2/PaymentLinkV2.php
@@ -37,10 +37,13 @@ protected function expires_at(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('d/m/Y H:i:s', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('d/m/Y H:i:s') === $value) ?
+                return ($d && $d->format('d/m/Y H:i:s') === $value) ?
                     $value : $ctx->raise('inválido (formato esperado: dd/mm/aaaa hh:mm:ss)');
             }
         );
diff --git a/src/Model/PaymentSubscription.php b/src/Model/PaymentSubscription.php
index 8967ed0..68d6bc6 100644
--- a/src/Model/PaymentSubscription.php
+++ b/src/Model/PaymentSubscription.php
@@ -67,11 +67,13 @@ protected function start_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Seller.php b/src/Model/Seller.php
index 76eade4..b1fb916 100644
--- a/src/Model/Seller.php
+++ b/src/Model/Seller.php
@@ -114,11 +114,13 @@ protected function birthdate(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Subscription.php b/src/Model/Subscription.php
index 1e84003..27143f7 100644
--- a/src/Model/Subscription.php
+++ b/src/Model/Subscription.php
@@ -164,11 +164,13 @@ protected function starting_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
@@ -200,11 +202,13 @@ protected function closing_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/SubscriptionV2/SubscriptionV2.php b/src/Model/SubscriptionV2/SubscriptionV2.php
index 39b0e60..f1bfa6a 100644
--- a/src/Model/SubscriptionV2/SubscriptionV2.php
+++ b/src/Model/SubscriptionV2/SubscriptionV2.php
@@ -46,11 +46,13 @@ protected function starting_date(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
diff --git a/src/Model/Token.php b/src/Model/Token.php
index b1145d2..805424a 100644
--- a/src/Model/Token.php
+++ b/src/Model/Token.php
@@ -83,11 +83,13 @@ protected function validated_at(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }
@@ -119,11 +121,13 @@ protected function expires_at(): Mutator
         return new Mutator(
             null,
             function ($value, $ctx) {
+                if (is_null($value)) {
+                    return null;
+                }
+
                 $d = \DateTime::createFromFormat('Y-m-d', $value);
 
-                return is_null($value) ||
-                    ($d && $d->format('Y-m-d') === $value) ?
-                    $value : $ctx->raise('inválido');
+                return ($d && $d->format('Y-m-d') === $value) ? $value : $ctx->raise('inválido');
             }
         );
     }