diff --git a/src/Traits/Decrypt.php b/src/Traits/Decrypt.php
index 416b6b0..9a5bcdb 100644
--- a/src/Traits/Decrypt.php
+++ b/src/Traits/Decrypt.php
@@ -12,8 +12,8 @@ public function parseCipherData($cipherData)
 
         return [
             'cipherText' => base64_decode($cipherParts[0]),
-            'version' => base64_decode($cipherParts[1]),
-            'iv' => base64_decode($cipherParts[2]),
+            'version'    => base64_decode($cipherParts[1]),
+            'iv'         => base64_decode($cipherParts[2]),
         ];
     }
 
@@ -41,15 +41,17 @@ protected function performDecryption($cipherData, $key): string
 
         [
             'cipherText' => $cipherText,
-            'version' => $version,
-            'iv' => $algorithmIv
+            'version'    => $version,
+            'iv'         => $algorithmIv
         ] = $this->parseCipherData($cipherData);
 
         $encryptionVersion = $this->getVersion($version);
         $algorithm = $this->versions[$encryptionVersion];
 
         if (openssl_open($cipherText, $decryptedData, base64_decode($key), $privateKey, $algorithm, $algorithmIv)) {
-            openssl_free_key($privateKey);
+            if (\PHP_VERSION_ID < 80000) {
+                openssl_free_key($privateKey);
+            }
 
             return $decryptedData;
         }
diff --git a/src/Traits/Encrypt.php b/src/Traits/Encrypt.php
index d7768f0..6d2c06d 100644
--- a/src/Traits/Encrypt.php
+++ b/src/Traits/Encrypt.php
@@ -24,12 +24,12 @@ protected function performEncryption($data, $version = null): array
         $algorithmIv = $this->generateIV($encryptionVersion);
         $algorithm = $this->versions[$encryptionVersion];
 
-         $publicKeys = collect($this->publicKey)->map(function($publicKey, $id) {
-              $key = openssl_pkey_get_public($publicKey);
-              if(!$key){
+        $publicKeys = collect($this->publicKey)->map(function ($publicKey, $id) {
+             $key = openssl_pkey_get_public($publicKey);
+            if (! $key) {
                 Log::critical('Public key id: [' . $id . '] Is invalid');
-              }
-              return $key;
+            }
+             return $key;
         })->filter();
 
         $encryptedData = null;
@@ -41,12 +41,14 @@ protected function performEncryption($data, $version = null): array
             // Ensure each shareKey is labelled with its corresponding key id
             foreach ($publicKeys as $keyId => $publicKey) {
                 $mappedKeys[$keyId] = base64_encode($envelopeKeys[$i]);
-                openssl_free_key($publicKey);
+                if (\PHP_VERSION_ID < 80000) {
+                    openssl_free_key($publicKey);
+                }
                 $i++;
             }
 
             return [
-                'keys' => $mappedKeys,
+                'keys'       => $mappedKeys,
                 'cipherText' => base64_encode($encryptedData)
                     . ':'
                     . base64_encode($encryptionVersion)