diff --git a/app/views/main-menu.php b/app/views/main-menu.php
index c6b45276..42d40d66 100644
--- a/app/views/main-menu.php
+++ b/app/views/main-menu.php
@@ -5,13 +5,13 @@ namespace Aviat\AnimeClient;
 $whose = $config->get('whose_list') . "'s ";
 $lastSegment = $urlGenerator->lastSegment();
 $extraSegment = $lastSegment === 'list' ? '/list' : '';
-$hasAnime = stripos($GLOBALS['_SERVER']['REQUEST_URI'], 'anime') !== FALSE;
-$hasManga = stripos($GLOBALS['_SERVER']['REQUEST_URI'], 'manga') !== FALSE;
+$hasAnime = str_contains($GLOBALS['_SERVER']['REQUEST_URI'], 'anime');
+$hasManga = str_contains($GLOBALS['_SERVER']['REQUEST_URI'], 'manga');
 
 ?>
 <div id="main-nav" class="flex flex-align-end flex-wrap">
 	<span class="flex-no-wrap grow-1">
-		<?php if(strpos($route_path, 'collection') === FALSE): ?>
+		<?php if( ! str_contains($route_path, 'collection')): ?>
 			<?= $helper->a(
 				$urlGenerator->defaultUrl($url_type),
 				$whose . ucfirst($url_type) . ' List',
diff --git a/src/AnimeClient/API/APIRequestBuilder.php b/src/AnimeClient/API/APIRequestBuilder.php
index 631b43a6..00bcffa5 100644
--- a/src/AnimeClient/API/APIRequestBuilder.php
+++ b/src/AnimeClient/API/APIRequestBuilder.php
@@ -272,7 +272,7 @@ abstract class APIRequestBuilder {
 			throw new InvalidArgumentException('Invalid HTTP method');
 		}
 
-		$realUrl = (strpos($uri, '//') !== FALSE)
+		$realUrl = (str_contains($uri, '//'))
 			? $uri
 			: $this->baseUrl . $uri;
 
@@ -297,7 +297,7 @@ abstract class APIRequestBuilder {
 	 */
 	private function buildUri(): Request
 	{
-		$url = (strpos($this->path, '//') !== FALSE)
+		$url = (str_contains($this->path, '//'))
 			? $this->path
 			: $this->baseUrl . $this->path;
 
@@ -314,11 +314,11 @@ abstract class APIRequestBuilder {
 	/**
 	 * Reset the class state for a new request
 	 *
-	 * @param string $url
+	 * @param string|null $url
 	 * @param string $type
 	 * @return void
 	 */
-	private function resetState($url, $type = 'GET'): void
+	private function resetState(?string $url, $type = 'GET'): void
 	{
 		$requestUrl = $url ?: $this->baseUrl;
 
diff --git a/src/AnimeClient/Controller.php b/src/AnimeClient/Controller.php
index 3f6a1cc3..f96318d8 100644
--- a/src/AnimeClient/Controller.php
+++ b/src/AnimeClient/Controller.php
@@ -141,7 +141,7 @@ class Controller {
 
 		$util = $this->container->get('util');
 		$doubleFormPage = $serverParams['HTTP_REFERER'] === $this->request->getUri();
-		$isLoginPage = (bool) strpos($serverParams['HTTP_REFERER'], 'login');
+		$isLoginPage = str_contains($serverParams['HTTP_REFERER'], 'login');
 
 		// Don't attempt to set the redirect url if
 		// the page is one of the form type pages,
@@ -198,9 +198,6 @@ class Controller {
 	 * @param HtmlView $view
 	 * @param string $template
 	 * @param array $data
-	 * @throws InvalidArgumentException
-	 * @throws ContainerException
-	 * @throws NotFoundException
 	 * @return string
 	 */
 	protected function loadPartial(HtmlView $view, string $template, array $data = []): string
@@ -233,8 +230,6 @@ class Controller {
 	 * @param string $template
 	 * @param array $data
 	 * @return HtmlView
-	 * @throws ContainerException
-	 * @throws NotFoundException
 	 */
 	protected function renderFullPage(HtmlView $view, string $template, array $data): HtmlView
 	{
diff --git a/src/AnimeClient/Controller/Anime.php b/src/AnimeClient/Controller/Anime.php
index d5503e24..90aa63c5 100644
--- a/src/AnimeClient/Controller/Anime.php
+++ b/src/AnimeClient/Controller/Anime.php
@@ -251,7 +251,7 @@ final class Anime extends BaseController {
 	{
 		$this->checkAuth();
 
-		if (stripos($this->request->getHeader('content-type')[0], 'application/json') !== FALSE)
+		if (str_contains($this->request->getHeader('content-type')[0], 'application/json'))
 		{
 			$data = Json::decode((string)$this->request->getBody());
 		}
diff --git a/src/AnimeClient/Controller/Manga.php b/src/AnimeClient/Controller/Manga.php
index 049be5a1..d0aa83ce 100644
--- a/src/AnimeClient/Controller/Manga.php
+++ b/src/AnimeClient/Controller/Manga.php
@@ -251,7 +251,7 @@ final class Manga extends Controller {
 	{
 		$this->checkAuth();
 
-		if (stripos($this->request->getHeader('content-type')[0], 'application/json') !== FALSE)
+		if (str_contains($this->request->getHeader('content-type')[0], 'application/json'))
 		{
 			$data = Json::decode((string)$this->request->getBody());
 		}
diff --git a/src/AnimeClient/Helper/Picture.php b/src/AnimeClient/Helper/Picture.php
index 75dc0038..32334ebd 100644
--- a/src/AnimeClient/Helper/Picture.php
+++ b/src/AnimeClient/Helper/Picture.php
@@ -68,12 +68,12 @@ final class Picture {
 
 		// If it is a placeholder image, make the
 		// fallback a png, not a jpg
-		if (strpos($uri, 'placeholder') !== FALSE)
+		if (str_contains($uri, 'placeholder'))
 		{
 			$fallbackExt = 'png';
 		}
 
-		if (strpos($uri, '//') === FALSE)
+		if ( ! str_contains($uri, '//'))
 		{
 			$uri = $urlGenerator->assetUrl($uri);
 		}