diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 0444df4e..73928851 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,7 +14,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.2
+          php-version: 8.3
 
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 14ea6937..b507122e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest, windows-latest, macos-latest]
-        php-versions: ['8.1', '8.2']
+        php-versions: ['8.1', '8.2', '8.3', '8.4']
     name: "PHP ${{ matrix.php-versions }} test on ${{ matrix.operating-system }}"
     steps:
       - name: Setup PHP
diff --git a/.gitignore b/.gitignore
index 41e0b75e..b4839906 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ _site
 .gh-pages
 .idea
 .php_cs.cache
+.php-cs-fixer.cache
 .phpunit.cache/
 .phpunit.result.cache
 GeoLite2-City.mmdb
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe872d0f..7f01bd2c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,14 @@
 CHANGELOG
 =========
 
+3.1.0 (2024-11-15)
+------------------
+
+* This library no longer uses implicitly nullable parameter types. This
+  will fix deprecation warning in PHP 8.4. Reported by Steven Lewis.
+  GitHub #230.
+* The PHPDoc type hints have been improved for use with PHPStan.
+
 3.0.0 (2023-12-04)
 ------------------
 
diff --git a/README.md b/README.md
index 9b3c6856..9121b725 100644
--- a/README.md
+++ b/README.md
@@ -443,6 +443,6 @@ The GeoIP2 PHP API uses [Semantic Versioning](https://semver.org/).
 
 ## Copyright and License ##
 
-This software is Copyright (c) 2013-2023 by MaxMind, Inc.
+This software is Copyright (c) 2013-2024 by MaxMind, Inc.
 
 This is free software, licensed under the Apache License, Version 2.0.
diff --git a/composer.json b/composer.json
index 60908c7d..6d1f07bf 100644
--- a/composer.json
+++ b/composer.json
@@ -13,8 +13,8 @@
         }
     ],
     "require": {
-        "maxmind-db/reader": "^1.11.1",
-        "maxmind/web-service-common": "~0.8",
+        "maxmind-db/reader": "^1.12.0",
+        "maxmind/web-service-common": "~0.10",
         "php": ">=8.1",
         "ext-json": "*"
     },
diff --git a/dev-bin/release.sh b/dev-bin/release.sh
index 7760fb7c..d58a102f 100755
--- a/dev-bin/release.sh
+++ b/dev-bin/release.sh
@@ -45,10 +45,10 @@ php composer.phar update --no-dev
 perl -pi -e "s/(?<=const VERSION = ').+?(?=';)/$tag/g" src/WebService/Client.php
 
 
-box_phar_hash='c24c400c424a68041d7af146c71943bf1acc0c5abafa45297c503b832b9c6b16  box.phar'
+box_phar_hash='8d12a7d69a5003a80bd603ea95a8f3dcea30b9a2ad84cd7cb15b8193929def9e  box.phar'
 
 if ! echo "$box_phar_hash" | sha256sum -c; then
-    wget -O box.phar "https://github.com/box-project/box/releases/download/4.5.1/box.phar"
+    wget -O box.phar "https://github.com/box-project/box/releases/download/4.6.1/box.phar"
 fi
 
 echo "$box_phar_hash" | sha256sum -c
@@ -93,10 +93,10 @@ if [ -n "$(git status --porcelain)" ]; then
 fi
 
 # Using Composer is possible, but they don't recommend it.
-phpdocumentor_phar_hash='bad7e4b8c99e73391bb3183a127593ecd1cd66ae42b4a33efe495d193e257f04  phpDocumentor.phar'
+phpdocumentor_phar_hash='9760ac280a10041928a8743354f68692c22f14cd5d05135dfc15e11d3b3c25ea  phpDocumentor.phar'
 
 if ! echo "$phpdocumentor_phar_hash" | sha256sum -c; then
-    wget -O phpDocumentor.phar https://github.com/phpDocumentor/phpDocumentor/releases/download/v3.4.3/phpDocumentor.phar
+    wget -O phpDocumentor.phar https://github.com/phpDocumentor/phpDocumentor/releases/download/v3.5.3/phpDocumentor.phar
 fi
 
 echo "$phpdocumentor_phar_hash" | sha256sum -c
diff --git a/phpstan.neon b/phpstan.neon
index ee1616db..63aadbac 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -3,5 +3,3 @@ parameters:
     paths:
         - src
         - tests
-    checkMissingIterableValueType: false
-
diff --git a/src/Database/Reader.php b/src/Database/Reader.php
index 74d1897a..9e3a128a 100644
--- a/src/Database/Reader.php
+++ b/src/Database/Reader.php
@@ -56,9 +56,9 @@ class Reader implements ProviderInterface
     /**
      * Constructor.
      *
-     * @param string $filename the path to the GeoIP2 database file
-     * @param array  $locales  list of locale codes to use in name property
-     *                         from most preferred to least preferred
+     * @param string        $filename the path to the GeoIP2 database file
+     * @param array<string> $locales  list of locale codes to use in name property
+     *                                from most preferred to least preferred
      *
      * @throws InvalidDatabaseException if the database is corrupt or invalid
      */
@@ -215,6 +215,9 @@ private function flatModelFor(string $class, string $type, string $ipAddress): o
         return new $class($record);
     }
 
+    /**
+     * @return array{0:array<string, mixed>, 1:int}
+     */
     private function getRecord(string $class, string $type, string $ipAddress): array
     {
         if (!str_contains($this->dbType, $type)) {
diff --git a/src/Model/AnonymousIp.php b/src/Model/AnonymousIp.php
index 7e3b9b6e..e8a99dc5 100644
--- a/src/Model/AnonymousIp.php
+++ b/src/Model/AnonymousIp.php
@@ -64,6 +64,8 @@ class AnonymousIp implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
      */
     public function __construct(array $raw)
     {
@@ -78,27 +80,18 @@ public function __construct(array $raw)
         $this->network = Util::cidr($ipAddress, $raw['prefix_len']);
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = [];
-        if ($this->isAnonymous !== null) {
-            $js['is_anonymous'] = $this->isAnonymous;
-        }
-        if ($this->isAnonymousVpn !== null) {
-            $js['is_anonymous_vpn'] = $this->isAnonymousVpn;
-        }
-        if ($this->isHostingProvider !== null) {
-            $js['is_hosting_provider'] = $this->isHostingProvider;
-        }
-        if ($this->isPublicProxy !== null) {
-            $js['is_public_proxy'] = $this->isPublicProxy;
-        }
-        if ($this->isResidentialProxy !== null) {
-            $js['is_residential_proxy'] = $this->isResidentialProxy;
-        }
-        if ($this->isTorExitNode !== null) {
-            $js['is_tor_exit_node'] = $this->isTorExitNode;
-        }
+        $js['is_anonymous'] = $this->isAnonymous;
+        $js['is_anonymous_vpn'] = $this->isAnonymousVpn;
+        $js['is_hosting_provider'] = $this->isHostingProvider;
+        $js['is_public_proxy'] = $this->isPublicProxy;
+        $js['is_residential_proxy'] = $this->isResidentialProxy;
+        $js['is_tor_exit_node'] = $this->isTorExitNode;
         $js['ip_address'] = $this->ipAddress;
         $js['network'] = $this->network;
 
diff --git a/src/Model/Asn.php b/src/Model/Asn.php
index 55b85c5e..5feae2f0 100644
--- a/src/Model/Asn.php
+++ b/src/Model/Asn.php
@@ -39,6 +39,8 @@ class Asn implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
      */
     public function __construct(array $raw)
     {
@@ -50,6 +52,9 @@ public function __construct(array $raw)
         $this->network = Util::cidr($ipAddress, $raw['prefix_len']);
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = [];
diff --git a/src/Model/City.php b/src/Model/City.php
index 05f9494f..bf2323ed 100644
--- a/src/Model/City.php
+++ b/src/Model/City.php
@@ -60,6 +60,9 @@ class City extends Country
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
+     * @param list<string>         $locales
      */
     public function __construct(array $raw, array $locales = ['en'])
     {
@@ -90,6 +93,9 @@ public function __construct(array $raw, array $locales = ['en'])
         $this->subdivisions = $subdivisions;
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = parent::jsonSerialize();
diff --git a/src/Model/ConnectionType.php b/src/Model/ConnectionType.php
index 6facb5e8..47e24cc4 100644
--- a/src/Model/ConnectionType.php
+++ b/src/Model/ConnectionType.php
@@ -33,6 +33,8 @@ class ConnectionType implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
      */
     public function __construct(array $raw)
     {
@@ -42,6 +44,9 @@ public function __construct(array $raw)
         $this->network = Util::cidr($ipAddress, $raw['prefix_len']);
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = [];
diff --git a/src/Model/Country.php b/src/Model/Country.php
index e2a4f812..c41af4a2 100644
--- a/src/Model/Country.php
+++ b/src/Model/Country.php
@@ -58,6 +58,9 @@ class Country implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
+     * @param list<string>         $locales
      */
     public function __construct(array $raw, array $locales = ['en'])
     {
@@ -81,6 +84,9 @@ public function __construct(array $raw, array $locales = ['en'])
         $this->traits = new Traits($raw['traits'] ?? []);
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = [];
diff --git a/src/Model/Domain.php b/src/Model/Domain.php
index 1ce83fdb..ed401c8c 100644
--- a/src/Model/Domain.php
+++ b/src/Model/Domain.php
@@ -33,6 +33,8 @@ class Domain implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
      */
     public function __construct(array $raw)
     {
@@ -42,6 +44,9 @@ public function __construct(array $raw)
         $this->network = Util::cidr($ipAddress, $raw['prefix_len']);
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = [];
diff --git a/src/Model/Isp.php b/src/Model/Isp.php
index f329063e..6b913051 100644
--- a/src/Model/Isp.php
+++ b/src/Model/Isp.php
@@ -65,6 +65,8 @@ class Isp implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $raw
      */
     public function __construct(array $raw)
     {
@@ -81,6 +83,9 @@ public function __construct(array $raw)
         $this->network = Util::cidr($ipAddress, $raw['prefix_len']);
     }
 
+    /**
+     * @return array<string, mixed>|null
+     */
     public function jsonSerialize(): ?array
     {
         $js = [];
diff --git a/src/Record/AbstractNamedRecord.php b/src/Record/AbstractNamedRecord.php
index 414841d5..b28162d6 100644
--- a/src/Record/AbstractNamedRecord.php
+++ b/src/Record/AbstractNamedRecord.php
@@ -14,14 +14,17 @@ abstract class AbstractNamedRecord implements \JsonSerializable
     public readonly ?string $name;
 
     /**
-     * @var array An array map where the keys are locale codes
-     *            and the values are names. This attribute is returned by all location
-     *            services and databases.
+     * @var array<string, string> An array map where the keys are locale codes
+     *                            and the values are names. This attribute is returned by all location
+     *                            services and databases.
      */
     public readonly array $names;
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
+     * @param list<string>         $locales
      */
     public function __construct(array $record, array $locales = ['en'])
     {
@@ -37,6 +40,9 @@ public function __construct(array $record, array $locales = ['en'])
         $this->name = null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = [];
diff --git a/src/Record/AbstractPlaceRecord.php b/src/Record/AbstractPlaceRecord.php
index 364d7bb8..71b68abd 100644
--- a/src/Record/AbstractPlaceRecord.php
+++ b/src/Record/AbstractPlaceRecord.php
@@ -21,6 +21,9 @@ abstract class AbstractPlaceRecord extends AbstractNamedRecord
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
+     * @param list<string>         $locales
      */
     public function __construct(array $record, array $locales = ['en'])
     {
@@ -30,6 +33,9 @@ public function __construct(array $record, array $locales = ['en'])
         $this->geonameId = $record['geoname_id'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = parent::jsonSerialize();
diff --git a/src/Record/Continent.php b/src/Record/Continent.php
index 873014ae..380c423c 100644
--- a/src/Record/Continent.php
+++ b/src/Record/Continent.php
@@ -26,6 +26,9 @@ class Continent extends AbstractNamedRecord
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
+     * @param list<string>         $locales
      */
     public function __construct(array $record, array $locales = ['en'])
     {
@@ -35,6 +38,9 @@ public function __construct(array $record, array $locales = ['en'])
         $this->geonameId = $record['geoname_id'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = parent::jsonSerialize();
diff --git a/src/Record/Country.php b/src/Record/Country.php
index 438ebd89..60fd1f90 100644
--- a/src/Record/Country.php
+++ b/src/Record/Country.php
@@ -27,6 +27,9 @@ class Country extends AbstractPlaceRecord
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
+     * @param list<string>         $locales
      */
     public function __construct(array $record, array $locales = ['en'])
     {
@@ -36,6 +39,9 @@ public function __construct(array $record, array $locales = ['en'])
         $this->isoCode = $record['iso_code'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = parent::jsonSerialize();
diff --git a/src/Record/Location.php b/src/Record/Location.php
index ca13b52c..6172ac83 100644
--- a/src/Record/Location.php
+++ b/src/Record/Location.php
@@ -64,6 +64,11 @@ class Location implements \JsonSerializable
      */
     public readonly ?string $timeZone;
 
+    /**
+     * @ignore
+     *
+     * @param array<string, mixed> $record
+     */
     public function __construct(array $record)
     {
         $this->averageIncome = $record['average_income'] ?? null;
@@ -75,6 +80,9 @@ public function __construct(array $record)
         $this->timeZone = $record['time_zone'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = [];
diff --git a/src/Record/MaxMind.php b/src/Record/MaxMind.php
index e80334d5..b2c33d9c 100644
--- a/src/Record/MaxMind.php
+++ b/src/Record/MaxMind.php
@@ -17,11 +17,19 @@ class MaxMind implements \JsonSerializable
      */
     public readonly ?int $queriesRemaining;
 
+    /**
+     * @ignore
+     *
+     * @param array<string, mixed> $record
+     */
     public function __construct(array $record)
     {
         $this->queriesRemaining = $record['queries_remaining'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = [];
diff --git a/src/Record/Postal.php b/src/Record/Postal.php
index d3adac6f..cea2f2ae 100644
--- a/src/Record/Postal.php
+++ b/src/Record/Postal.php
@@ -30,6 +30,8 @@ class Postal implements \JsonSerializable
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
      */
     public function __construct(array $record)
     {
@@ -37,6 +39,9 @@ public function __construct(array $record)
         $this->confidence = $record['confidence'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = [];
diff --git a/src/Record/RepresentedCountry.php b/src/Record/RepresentedCountry.php
index a810fc63..67f24b08 100644
--- a/src/Record/RepresentedCountry.php
+++ b/src/Record/RepresentedCountry.php
@@ -22,6 +22,9 @@ class RepresentedCountry extends Country
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
+     * @param list<string>         $locales
      */
     public function __construct(array $record, array $locales = ['en'])
     {
@@ -30,6 +33,9 @@ public function __construct(array $record, array $locales = ['en'])
         $this->type = $record['type'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = parent::jsonSerialize();
diff --git a/src/Record/Subdivision.php b/src/Record/Subdivision.php
index cd11e58b..3719a6c3 100644
--- a/src/Record/Subdivision.php
+++ b/src/Record/Subdivision.php
@@ -22,6 +22,9 @@ class Subdivision extends AbstractPlaceRecord
 
     /**
      * @ignore
+     *
+     * @param array<string, mixed> $record
+     * @param list<string>         $locales
      */
     public function __construct(array $record, array $locales = ['en'])
     {
@@ -30,6 +33,9 @@ public function __construct(array $record, array $locales = ['en'])
         $this->isoCode = $record['iso_code'] ?? null;
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = parent::jsonSerialize();
diff --git a/src/Record/Traits.php b/src/Record/Traits.php
index 493f86ae..d75a8f71 100644
--- a/src/Record/Traits.php
+++ b/src/Record/Traits.php
@@ -196,6 +196,11 @@ class Traits implements \JsonSerializable
      */
     public readonly ?string $userType;
 
+    /**
+     * @ignore
+     *
+     * @param array<string, mixed> $record
+     */
     public function __construct(array $record)
     {
         $this->autonomousSystemNumber = $record['autonomous_system_number'] ?? null;
@@ -226,6 +231,9 @@ public function __construct(array $record)
         }
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     public function jsonSerialize(): array
     {
         $js = [];
diff --git a/src/WebService/Client.php b/src/WebService/Client.php
index f74bb513..fb3966ef 100644
--- a/src/WebService/Client.php
+++ b/src/WebService/Client.php
@@ -58,30 +58,30 @@ class Client implements ProviderInterface
     private WsClient $client;
     private static string $basePath = '/geoip/v2.1';
 
-    public const VERSION = 'v3.0.0';
+    public const VERSION = 'v3.1.0';
 
     /**
      * Constructor.
      *
-     * @param int    $accountId  your MaxMind account ID
-     * @param string $licenseKey your MaxMind license key
-     * @param array  $locales    list of locale codes to use in name property
-     *                           from most preferred to least preferred
-     * @param array  $options    array of options. Valid options include:
-     *                           * `host` - The host to use when querying the web
-     *                           service. To query the GeoLite2 web service
-     *                           instead of the GeoIP2 web service, set the
-     *                           host to `geolite.info`. To query the Sandbox
-     *                           GeoIP2 web service instead of the production
-     *                           GeoIP2 web service, set the host to
-     *                           `sandbox.maxmind.com`. The sandbox allows you to
-     *                           experiment with the API without affecting your
-     *                           production data.
-     *                           * `timeout` - Timeout in seconds.
-     *                           * `connectTimeout` - Initial connection timeout in seconds.
-     *                           * `proxy` - The HTTP proxy to use. May include a schema, port,
-     *                           username, and password, e.g.,
-     *                           `http://username:password@127.0.0.1:10`.
+     * @param int                  $accountId  your MaxMind account ID
+     * @param string               $licenseKey your MaxMind license key
+     * @param list<string>         $locales    list of locale codes to use in name property
+     *                                         from most preferred to least preferred
+     * @param array<string, mixed> $options    array of options. Valid options include:
+     *                                         * `host` - The host to use when querying the web
+     *                                         service. To query the GeoLite2 web service
+     *                                         instead of the GeoIP2 web service, set the
+     *                                         host to `geolite.info`. To query the Sandbox
+     *                                         GeoIP2 web service instead of the production
+     *                                         GeoIP2 web service, set the host to
+     *                                         `sandbox.maxmind.com`. The sandbox allows you to
+     *                                         experiment with the API without affecting your
+     *                                         production data.
+     *                                         * `timeout` - Timeout in seconds.
+     *                                         * `connectTimeout` - Initial connection timeout in seconds.
+     *                                         * `proxy` - The HTTP proxy to use. May include a schema, port,
+     *                                         username, and password, e.g.,
+     *                                         `http://username:password@127.0.0.1:10`.
      */
     public function __construct(
         int $accountId,
diff --git a/tests/GeoIp2/Test/Database/ReaderTest.php b/tests/GeoIp2/Test/Database/ReaderTest.php
index eea3a849..e1cdbe53 100644
--- a/tests/GeoIp2/Test/Database/ReaderTest.php
+++ b/tests/GeoIp2/Test/Database/ReaderTest.php
@@ -15,6 +15,9 @@
  */
 class ReaderTest extends TestCase
 {
+    /**
+     * @return array<list<string>>
+     */
     public static function databaseTypes(): array
     {
         return [['City', 'city'], ['Country', 'country']];
diff --git a/tests/GeoIp2/Test/Model/CountryTest.php b/tests/GeoIp2/Test/Model/CountryTest.php
index 9c7c67d5..063f1dda 100644
--- a/tests/GeoIp2/Test/Model/CountryTest.php
+++ b/tests/GeoIp2/Test/Model/CountryTest.php
@@ -41,6 +41,7 @@ class CountryTest extends TestCase
         ],
     ];
 
+    // @phpstan-ignore-next-line
     private ?Country $model;
 
     protected function setUp(): void
@@ -205,10 +206,6 @@ public function testJsonSerialize(): void
             'jsonSerialize returns initial array for the record'
         );
 
-        if (version_compare(\PHP_VERSION, '5.4.0', '<')) {
-            $this->markTestSkipped('Requires PHP 5.4+.');
-        }
-
         $this->assertSame(
             json_encode($js),
             json_encode($this->model),
diff --git a/tests/GeoIp2/Test/WebService/ClientTest.php b/tests/GeoIp2/Test/WebService/ClientTest.php
index 71ec3fb1..b790b7a2 100644
--- a/tests/GeoIp2/Test/WebService/ClientTest.php
+++ b/tests/GeoIp2/Test/WebService/ClientTest.php
@@ -44,6 +44,9 @@ class ClientTest extends TestCase
         ],
     ];
 
+    /**
+     * @return list<array<string, mixed>>
+     */
     private function getResponse(string $service, string $ipAddress): array
     {
         if ($service === 'Insights') {
@@ -492,6 +495,10 @@ private function response(
         return [$status, $headers, $body];
     }
 
+    /**
+     * @param list<string>         $locales
+     * @param array<string, mixed> $options
+     */
     private function makeRequest(
         string $service,
         string $ipAddress,