diff --git a/src/GoogleTranslate.php b/src/GoogleTranslate.php
index eec6946..6af7073 100644
--- a/src/GoogleTranslate.php
+++ b/src/GoogleTranslate.php
@@ -2,7 +2,6 @@
 
 namespace Stichoza\GoogleTranslate;
 
-use BadMethodCallException;
 use ErrorException;
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\RequestException;
@@ -121,7 +120,7 @@ public function __construct(string $target = 'en', string $source = null, array
      * @param string $target Language code
      * @return GoogleTranslate
      */
-    public function setTarget(string $target) : self
+    public function setTarget(string $target): self
     {
         $this->target = $target;
         return $this;
@@ -133,7 +132,7 @@ public function setTarget(string $target) : self
      * @param string|null $source Language code
      * @return GoogleTranslate
      */
-    public function setSource(string $source = null) : self
+    public function setSource(string $source = null): self
     {
         $this->source = $source ?? 'auto';
         return $this;
@@ -145,7 +144,7 @@ public function setSource(string $source = null) : self
      * @param string $url Google Translate URL base
      * @return GoogleTranslate
      */
-    public function setUrl(string $url) : self
+    public function setUrl(string $url): self
     {
         $this->url = $url;
         return $this;
@@ -157,7 +156,7 @@ public function setUrl(string $url) : self
      * @param array $options guzzleHttp client options.
      * @return GoogleTranslate
      */
-    public function setOptions(array $options = null) : self
+    public function setOptions(array $options = null): self
     {
         $this->options = $options ?? [];
         return $this;
@@ -169,7 +168,7 @@ public function setOptions(array $options = null) : self
      * @param TokenProviderInterface $tokenProvider
      * @return GoogleTranslate
      */
-    public function setTokenProvider(TokenProviderInterface $tokenProvider) : self
+    public function setTokenProvider(TokenProviderInterface $tokenProvider): self
     {
         $this->tokenProvider = $tokenProvider;
         return $this;
@@ -218,7 +217,7 @@ public static function trans(string $string, string $target = 'en', string $sour
      * @throws ErrorException           If the HTTP request fails
      * @throws UnexpectedValueException If received data cannot be decoded
      */
-    public function translate(string $string) : string
+    public function translate(string $string): string
     {
         /*
          * if source lang and target lang are the same
@@ -293,7 +292,7 @@ public function translate(string $string) : string
      * @throws UnexpectedValueException If received data cannot be decoded
      * @return array|string Response
      */
-    public function getResponse(string $string) : array
+    public function getResponse(string $string): array
     {
         $queryArray = array_merge($this->urlParams, [
             'sl'   => $this->source,
@@ -331,7 +330,7 @@ public function getResponse(string $string) : array
      * @param string $lang Langauge code to verify
      * @return bool
      */
-    protected function isValidLocale(string $lang) : bool
+    protected function isValidLocale(string $lang): bool
     {
         return (bool) preg_match('/^([a-z]{2})(-[A-Z]{2})?$/', $lang);
     }
diff --git a/src/Tokens/GoogleTokenGenerator.php b/src/Tokens/GoogleTokenGenerator.php
index c99dc1f..27720df 100644
--- a/src/Tokens/GoogleTokenGenerator.php
+++ b/src/Tokens/GoogleTokenGenerator.php
@@ -18,7 +18,7 @@ class GoogleTokenGenerator implements TokenProviderInterface
      * @param string $text Text to translate
      * @return string Token
      */
-    public function generateToken(string $source, string $target, string $text) : string
+    public function generateToken(string $source, string $target, string $text): string
     {
         return $this->TL($text);
     }
@@ -144,7 +144,8 @@ private function unsignedRightShift($a, $b)
      *
      * @return number
      */
-    private function JS_charCodeAt($str, $index) {
+    private function JS_charCodeAt($str, $index)
+    {
         $utf16 = mb_convert_encoding($str, 'UTF-16LE', 'UTF-8');
         return ord($utf16[$index*2]) + (ord($utf16[$index*2+1]) << 8);
     }
@@ -156,7 +157,8 @@ private function JS_charCodeAt($str, $index) {
      *
      * @return number
      */
-    private function JS_length($str) {
+    private function JS_length($str)
+    {
         $utf16 = mb_convert_encoding($str, 'UTF-16LE', 'UTF-8');
         return strlen($utf16)/2;
     }
diff --git a/src/Tokens/SampleTokenGenerator.php b/src/Tokens/SampleTokenGenerator.php
index 59ab422..e167c05 100644
--- a/src/Tokens/SampleTokenGenerator.php
+++ b/src/Tokens/SampleTokenGenerator.php
@@ -15,7 +15,7 @@ class SampleTokenGenerator implements TokenProviderInterface
      * @param string $text Text to translate
      * @return string Token
      */
-    public function generateToken(string $source, string $target, string $text) : string
+    public function generateToken(string $source, string $target, string $text): string
     {
         return sprintf('%d.%d', rand(10000, 99999), rand(10000, 99999));
     }
diff --git a/src/Tokens/TokenProviderInterface.php b/src/Tokens/TokenProviderInterface.php
index d38d6bf..7f5b1a9 100644
--- a/src/Tokens/TokenProviderInterface.php
+++ b/src/Tokens/TokenProviderInterface.php
@@ -15,5 +15,5 @@ interface TokenProviderInterface
      * @param string $text Text to translate
      * @return string Token
      */
-    public function generateToken(string $source, string $target, string $text) : string;
+    public function generateToken(string $source, string $target, string $text): string;
 }