diff --git a/GoogleMaps.php b/GoogleMaps.php
index 2027745..0aa75ed 100644
--- a/GoogleMaps.php
+++ b/GoogleMaps.php
@@ -83,10 +83,10 @@ final class GoogleMaps extends AbstractHttpProvider implements Provider
     public static function business(
         ClientInterface $client,
         string $clientId,
-        string $privateKey = null,
-        string $region = null,
-        string $apiKey = null,
-        string $channel = null
+        ?string $privateKey = null,
+        ?string $region = null,
+        ?string $apiKey = null,
+        ?string $channel = null
     ) {
         $provider = new self($client, $region, $apiKey);
         $provider->clientId = $clientId;
@@ -101,7 +101,7 @@ public static function business(
      * @param string          $region Region biasing (optional)
      * @param string          $apiKey Google Geocoding API key (optional)
      */
-    public function __construct(ClientInterface $client, string $region = null, string $apiKey = null)
+    public function __construct(ClientInterface $client, ?string $region = null, ?string $apiKey = null)
     {
         parent::__construct($client);
 
@@ -160,7 +160,7 @@ public function getName(): string
     /**
      * @return string query with extra params
      */
-    private function buildQuery(string $url, string $locale = null, string $region = null): string
+    private function buildQuery(string $url, ?string $locale = null, ?string $region = null): string
     {
         if (null === $this->apiKey && null === $this->clientId) {
             throw new InvalidCredentials('You must provide an API key. Keyless access was removed in June, 2016');
@@ -197,7 +197,7 @@ private function buildQuery(string $url, string $locale = null, string $region =
      * @throws InvalidServerResponse
      * @throws InvalidCredentials
      */
-    private function fetchUrl(string $url, string $locale = null, int $limit, string $region = null): AddressCollection
+    private function fetchUrl(string $url, ?string $locale = null, int $limit, ?string $region = null): AddressCollection
     {
         $url = $this->buildQuery($url, $locale, $region);
         $content = $this->getUrlContents($url);
diff --git a/Model/GoogleAddress.php b/Model/GoogleAddress.php
index fbd96c9..af648c4 100644
--- a/Model/GoogleAddress.php
+++ b/Model/GoogleAddress.php
@@ -124,7 +124,7 @@ final class GoogleAddress extends Address
     /**
      * @return GoogleAddress
      */
-    public function withId(string $id = null)
+    public function withId(?string $id = null)
     {
         $new = clone $this;
         $new->id = $id;
@@ -145,7 +145,7 @@ public function getId()
     /**
      * @return GoogleAddress
      */
-    public function withLocationType(string $locationType = null)
+    public function withLocationType(?string $locationType = null)
     {
         $new = clone $this;
         $new->locationType = $locationType;
@@ -193,7 +193,7 @@ public function getFormattedAddress()
     /**
      * @return GoogleAddress
      */
-    public function withFormattedAddress(string $formattedAddress = null)
+    public function withFormattedAddress(?string $formattedAddress = null)
     {
         $new = clone $this;
         $new->formattedAddress = $formattedAddress;
@@ -212,7 +212,7 @@ public function getAirport()
     /**
      * @return GoogleAddress
      */
-    public function withAirport(string $airport = null)
+    public function withAirport(?string $airport = null)
     {
         $new = clone $this;
         $new->airport = $airport;
@@ -231,7 +231,7 @@ public function getColloquialArea()
     /**
      * @return GoogleAddress
      */
-    public function withColloquialArea(string $colloquialArea = null)
+    public function withColloquialArea(?string $colloquialArea = null)
     {
         $new = clone $this;
         $new->colloquialArea = $colloquialArea;
@@ -250,7 +250,7 @@ public function getIntersection()
     /**
      * @return GoogleAddress
      */
-    public function withIntersection(string $intersection = null)
+    public function withIntersection(?string $intersection = null)
     {
         $new = clone $this;
         $new->intersection = $intersection;
@@ -269,7 +269,7 @@ public function getPostalCodeSuffix()
     /**
      * @return GoogleAddress
      */
-    public function withPostalCodeSuffix(string $postalCodeSuffix = null)
+    public function withPostalCodeSuffix(?string $postalCodeSuffix = null)
     {
         $new = clone $this;
         $new->postalCodeSuffix = $postalCodeSuffix;
@@ -288,7 +288,7 @@ public function getNaturalFeature()
     /**
      * @return GoogleAddress
      */
-    public function withNaturalFeature(string $naturalFeature = null)
+    public function withNaturalFeature(?string $naturalFeature = null)
     {
         $new = clone $this;
         $new->naturalFeature = $naturalFeature;
@@ -307,7 +307,7 @@ public function getNeighborhood()
     /**
      * @return GoogleAddress
      */
-    public function withNeighborhood(string $neighborhood = null)
+    public function withNeighborhood(?string $neighborhood = null)
     {
         $new = clone $this;
         $new->neighborhood = $neighborhood;
@@ -326,7 +326,7 @@ public function getPark()
     /**
      * @return GoogleAddress
      */
-    public function withPark(string $park = null)
+    public function withPark(?string $park = null)
     {
         $new = clone $this;
         $new->park = $park;
@@ -345,7 +345,7 @@ public function getPointOfInterest()
     /**
      * @return GoogleAddress
      */
-    public function withPointOfInterest(string $pointOfInterest = null)
+    public function withPointOfInterest(?string $pointOfInterest = null)
     {
         $new = clone $this;
         $new->pointOfInterest = $pointOfInterest;
@@ -364,7 +364,7 @@ public function getPolitical()
     /**
      * @return GoogleAddress
      */
-    public function withPolitical(string $political = null)
+    public function withPolitical(?string $political = null)
     {
         $new = clone $this;
         $new->political = $political;
@@ -383,7 +383,7 @@ public function getPremise()
     /**
      * @return GoogleAddress
      */
-    public function withPremise(string $premise = null)
+    public function withPremise(?string $premise = null)
     {
         $new = clone $this;
         $new->premise = $premise;
@@ -402,7 +402,7 @@ public function getStreetAddress()
     /**
      * @return GoogleAddress
      */
-    public function withStreetAddress(string $streetAddress = null)
+    public function withStreetAddress(?string $streetAddress = null)
     {
         $new = clone $this;
         $new->streetAddress = $streetAddress;
@@ -421,7 +421,7 @@ public function getSubpremise()
     /**
      * @return GoogleAddress
      */
-    public function withSubpremise(string $subpremise = null)
+    public function withSubpremise(?string $subpremise = null)
     {
         $new = clone $this;
         $new->subpremise = $subpremise;
@@ -440,7 +440,7 @@ public function getWard()
     /**
      * @return GoogleAddress
      */
-    public function withWard(string $ward = null)
+    public function withWard(?string $ward = null)
     {
         $new = clone $this;
         $new->ward = $ward;
@@ -459,7 +459,7 @@ public function getEstablishment()
     /**
      * @return GoogleAddress
      */
-    public function withEstablishment(string $establishment = null)
+    public function withEstablishment(?string $establishment = null)
     {
         $new = clone $this;
         $new->establishment = $establishment;
diff --git a/Tests/GoogleMapsTest.php b/Tests/GoogleMapsTest.php
index 6b5ba25..d56d86b 100644
--- a/Tests/GoogleMapsTest.php
+++ b/Tests/GoogleMapsTest.php
@@ -141,7 +141,7 @@ public function testGeocodeBoundsWithRealAddressForNonRooftopLocation(): void
 
     public function testReverse(): void
     {
-        $this->expectException(\Geocoder\Exception\InvalidServerResponse::class);
+        $this->expectException(InvalidServerResponse::class);
 
         $provider = new GoogleMaps($this->getMockedHttpClient(), null, 'mock-api-key');
         $provider->reverseQuery(ReverseQuery::fromCoordinates(1, 2));