diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 2e23db2a..1b974dd4 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -51,8 +51,8 @@ jobs:
       - uses: "shivammathur/setup-php@v2"
         with:
           php-version: "8.2"
-          tools: "phpstan:1.10.57"
+          tools: "phpstan:1.12.3"
           coverage: "none"
       - uses: "ramsey/composer-install@v3"
       - name: "Run PHPStan"
-        run: "phpstan analyse -c phpstan.neon -l 4 getid3"
+        run: "phpstan"
diff --git a/getid3/module.audio-video.quicktime.php b/getid3/module.audio-video.quicktime.php
index d52e85fd..9b1cfb38 100644
--- a/getid3/module.audio-video.quicktime.php
+++ b/getid3/module.audio-video.quicktime.php
@@ -1650,7 +1650,7 @@ public function QuicktimeParseAtom($atomname, $atomsize, $atom_data, $baseoffset
 						@list($all, $latitude, $longitude, $altitude) = $matches;
 						$info['quicktime']['comments']['gps_latitude'][]  = floatval($latitude);
 						$info['quicktime']['comments']['gps_longitude'][] = floatval($longitude);
-						if (!empty($altitude)) {
+						if (!empty($altitude)) { // @phpstan-ignore-line
 							$info['quicktime']['comments']['gps_altitude'][] = floatval($altitude);
 						}
 					} else {
diff --git a/getid3/module.audio-video.riff.php b/getid3/module.audio-video.riff.php
index 3ea1bacf..59ed5819 100644
--- a/getid3/module.audio-video.riff.php
+++ b/getid3/module.audio-video.riff.php
@@ -98,7 +98,7 @@ public function Analyze() {
 					$info['avdataend'] = $info['filesize'];
 				}
 
-				$nextRIFFoffset = $Original['avdataoffset'] + 8 + $thisfile_riff['header_size']; // 8 = "RIFF" + 32-bit offset
+				$nextRIFFoffset = (int) $Original['avdataoffset'] + 8 + (int) $thisfile_riff['header_size']; // 8 = "RIFF" + 32-bit offset
 				while ($nextRIFFoffset < min($info['filesize'], $info['avdataend'])) {
 					try {
 						$this->fseek($nextRIFFoffset);
diff --git a/phpstan.neon b/phpstan.neon
index 94321ef7..1fbce308 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,4 +1,7 @@
 parameters:
+    level: 4
+    paths:
+        - getid3
     excludes_analyse:
     polluteScopeWithLoopInitialAssignments: true
     dynamicConstantNames: