diff --git a/CHANGELOG.md b/CHANGELOG.md
index 566ae9dc..1a0b0c9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com), and this
 
 ### Changed
 * [#1935](https://github.com/shlinkio/shlink/issues/1935) Replace dependency on abandoned `php-middleware/request-id` with userland simple middleware.
+* [#1988](https://github.com/shlinkio/shlink/issues/1988) Remove dependency on `league\uri` package.
 
 ### Deprecated
 * *Nothing*
diff --git a/composer.json b/composer.json
index c309aeef..0ea76443 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,6 @@
         "laminas/laminas-inputfilter": "^2.27",
         "laminas/laminas-servicemanager": "^3.21",
         "laminas/laminas-stdlib": "^3.17",
-        "league/uri": "^6.8",
         "matomo/matomo-php-tracker": "^3.2",
         "mezzio/mezzio": "^3.17",
         "mezzio/mezzio-fastroute": "^3.11",
diff --git a/module/Core/src/Config/NotFoundRedirectResolver.php b/module/Core/src/Config/NotFoundRedirectResolver.php
index ce5401d2..cfb09c8e 100644
--- a/module/Core/src/Config/NotFoundRedirectResolver.php
+++ b/module/Core/src/Config/NotFoundRedirectResolver.php
@@ -4,8 +4,8 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Core\Config;
 
-use League\Uri\Exceptions\SyntaxError;
-use League\Uri\Uri;
+use Laminas\Diactoros\Exception\InvalidArgumentException;
+use Laminas\Diactoros\Uri;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\UriInterface;
 use Psr\Log\LoggerInterface;
@@ -51,8 +51,8 @@ class NotFoundRedirectResolver implements NotFoundRedirectResolverInterface
     private function resolvePlaceholders(UriInterface $currentUri, string $redirectUrl): string
     {
         try {
-            $redirectUri = Uri::createFromString($redirectUrl);
-        } catch (SyntaxError $e) {
+            $redirectUri = new Uri($redirectUrl);
+        } catch (InvalidArgumentException $e) {
             $this->logger->warning('It was not possible to parse "{url}" as a valid URL: {e}', [
                 'e' => $e,
                 'url' => $redirectUrl,
@@ -63,26 +63,22 @@ class NotFoundRedirectResolver implements NotFoundRedirectResolverInterface
         $path = $currentUri->getPath();
         $domain = $currentUri->getAuthority();
 
-        $replacePlaceholderForPattern = static fn (string $pattern, string $replace, ?string $value): string|null =>
-            $value === null ? null : str_replace($pattern, $replace, $value);
-
         $replacePlaceholders = static function (
             callable $modifier,
-            ?string $value,
+            string $value,
         ) use (
-            $replacePlaceholderForPattern,
             $path,
             $domain,
-        ): string|null {
-            $value = $replacePlaceholderForPattern($modifier(self::DOMAIN_PLACEHOLDER), $modifier($domain), $value);
-            return $replacePlaceholderForPattern($modifier(self::ORIGINAL_PATH_PLACEHOLDER), $modifier($path), $value);
+        ): string {
+            $value = str_replace(urlencode(self::DOMAIN_PLACEHOLDER), $modifier($domain), $value);
+            return str_replace(urlencode(self::ORIGINAL_PATH_PLACEHOLDER), $modifier($path), $value);
         };
 
         $replacePlaceholdersInPath = static function (string $path) use ($replacePlaceholders): string {
             $result = $replacePlaceholders(static fn (mixed $v) => $v, $path);
-            return str_replace('//', '/', $result ?? '');
+            return str_replace('//', '/', $result);
         };
-        $replacePlaceholdersInQuery = static fn (?string $query): string|null => $replacePlaceholders(
+        $replacePlaceholdersInQuery = static fn (string $query): string => $replacePlaceholders(
             urlencode(...),
             $query,
         );
diff --git a/module/Core/src/ShortUrl/Helper/ShortUrlRedirectionBuilder.php b/module/Core/src/ShortUrl/Helper/ShortUrlRedirectionBuilder.php
index c322f195..bbf616f7 100644
--- a/module/Core/src/ShortUrl/Helper/ShortUrlRedirectionBuilder.php
+++ b/module/Core/src/ShortUrl/Helper/ShortUrlRedirectionBuilder.php
@@ -5,8 +5,8 @@ declare(strict_types=1);
 namespace Shlinkio\Shlink\Core\ShortUrl\Helper;
 
 use GuzzleHttp\Psr7\Query;
+use Laminas\Diactoros\Uri;
 use Laminas\Stdlib\ArrayUtils;
-use League\Uri\Uri;
 use Psr\Http\Message\ServerRequestInterface;
 use Shlinkio\Shlink\Core\Model\DeviceType;
 use Shlinkio\Shlink\Core\Options\TrackingOptions;
@@ -27,7 +27,7 @@ class ShortUrlRedirectionBuilder implements ShortUrlRedirectionBuilderInterface
     ): string {
         $currentQuery = $request->getQueryParams();
         $device = DeviceType::matchFromUserAgent($request->getHeaderLine('User-Agent'));
-        $uri = Uri::createFromString($shortUrl->longUrlForDevice($device));
+        $uri = new Uri($shortUrl->longUrlForDevice($device));
         $shouldForwardQuery = $shortUrl->forwardQuery();
 
         return $uri
@@ -36,9 +36,9 @@ class ShortUrlRedirectionBuilder implements ShortUrlRedirectionBuilderInterface
             ->__toString();
     }
 
-    private function resolveQuery(Uri $uri, array $currentQuery): ?string
+    private function resolveQuery(Uri $uri, array $currentQuery): string
     {
-        $hardcodedQuery = Query::parse($uri->getQuery() ?? '');
+        $hardcodedQuery = Query::parse($uri->getQuery());
 
         $disableTrackParam = $this->trackingOptions->disableTrackParam;
         if ($disableTrackParam !== null) {
@@ -48,7 +48,7 @@ class ShortUrlRedirectionBuilder implements ShortUrlRedirectionBuilderInterface
         // We want to merge preserving numeric keys, as some params might be numbers
         $mergedQuery = ArrayUtils::merge($hardcodedQuery, $currentQuery, true);
 
-        return empty($mergedQuery) ? null : Query::build($mergedQuery);
+        return Query::build($mergedQuery);
     }
 
     private function resolvePath(Uri $uri, ?string $extraPath): string
diff --git a/module/Core/test-api/Action/RedirectTest.php b/module/Core/test-api/Action/RedirectTest.php
index f3edcbe4..bbcc6fec 100644
--- a/module/Core/test-api/Action/RedirectTest.php
+++ b/module/Core/test-api/Action/RedirectTest.php
@@ -18,6 +18,8 @@ class RedirectTest extends ApiTestCase
     public function properRedirectHappensBasedOnUserAgent(?string $userAgent, string $expectedRedirect): void
     {
         $response = $this->callShortUrl('def456', $userAgent);
+
+        self::assertEquals(302, $response->getStatusCode());
         self::assertEquals($expectedRedirect, $response->getHeaderLine('Location'));
     }
 
diff --git a/module/Core/test/Config/NotFoundRedirectResolverTest.php b/module/Core/test/Config/NotFoundRedirectResolverTest.php
index 0b943099..5ef5db2b 100644
--- a/module/Core/test/Config/NotFoundRedirectResolverTest.php
+++ b/module/Core/test/Config/NotFoundRedirectResolverTest.php
@@ -57,8 +57,14 @@ class NotFoundRedirectResolverTest extends TestCase
         yield 'base URL with trailing slash' => [
             $uri = new Uri('/'),
             self::notFoundType(ServerRequestFactory::fromGlobals()->withUri($uri)),
-            new NotFoundRedirectOptions(baseUrl: 'baseUrl'),
-            'baseUrl',
+            new NotFoundRedirectOptions(baseUrl: 'https://example.com/baseUrl'),
+            'https://example.com/baseUrl',
+        ];
+        yield 'base URL without trailing slash' => [
+            $uri = new Uri(''),
+            self::notFoundType(ServerRequestFactory::fromGlobals()->withUri($uri)),
+            new NotFoundRedirectOptions(baseUrl: 'https://example.com/baseUrl'),
+            'https://example.com/baseUrl',
         ];
         yield 'base URL with domain placeholder' => [
             $uri = new Uri('https://s.test'),
@@ -72,17 +78,11 @@ class NotFoundRedirectResolverTest extends TestCase
             new NotFoundRedirectOptions(baseUrl: 'https://redirect-here.com/?domain={DOMAIN}'),
             'https://redirect-here.com/?domain=s.test',
         ];
-        yield 'base URL without trailing slash' => [
-            $uri = new Uri(''),
-            self::notFoundType(ServerRequestFactory::fromGlobals()->withUri($uri)),
-            new NotFoundRedirectOptions(baseUrl: 'baseUrl'),
-            'baseUrl',
-        ];
         yield 'regular 404' => [
             $uri = new Uri('/foo/bar'),
             self::notFoundType(ServerRequestFactory::fromGlobals()->withUri($uri)),
-            new NotFoundRedirectOptions(regular404: 'regular404'),
-            'regular404',
+            new NotFoundRedirectOptions(regular404: 'https://example.com/regular404'),
+            'https://example.com/regular404',
         ];
         yield 'regular 404 with path placeholder in query' => [
             $uri = new Uri('/foo/bar'),
@@ -101,8 +101,8 @@ class NotFoundRedirectResolverTest extends TestCase
         yield 'invalid short URL' => [
             new Uri('/foo'),
             self::notFoundType(self::requestForRoute(RedirectAction::class)),
-            new NotFoundRedirectOptions(invalidShortUrl: 'invalidShortUrl'),
-            'invalidShortUrl',
+            new NotFoundRedirectOptions(invalidShortUrl: 'https://example.com/invalidShortUrl'),
+            'https://example.com/invalidShortUrl',
         ];
         yield 'invalid short URL with path placeholder' => [
             new Uri('/foo'),