diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 3eae125..1fb7c42 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,6 +1,10 @@
 name: ci
 
-on: [ push, pull_request ]
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
 
 jobs:
   build-test:
@@ -9,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: [ '7.4', '8.0', '8.1' ]
+        php-versions: [ '7.4', '8.0', '8.1', '8.2' ]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/composer.json b/composer.json
index 9890cb1..61cc928 100644
--- a/composer.json
+++ b/composer.json
@@ -28,15 +28,15 @@
         }
     ],
     "require": {
-        "php": "^7.4 | ^8.0 | ^8.1",
+        "php": "^7.4 | ^8.0 | ^8.1 | ^8.2",
         "ext-json": "*",
         "researchgate/libris": "^2.3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.3",
         "squizlabs/php_codesniffer": "^3.5",
-        "vimeo/psalm": "^4.9",
-        "phpstan/phpstan": "^0.12.42",
+        "vimeo/psalm": "^5.15.0",
+        "phpstan/phpstan": "^1.10.38",
         "friendsofphp/php-cs-fixer": "^3.1"
     },
     "autoload": {
diff --git a/src/Model/Container.php b/src/Model/Container.php
index 08964f2..8a61ff3 100644
--- a/src/Model/Container.php
+++ b/src/Model/Container.php
@@ -3,13 +3,15 @@
 namespace Geissler\Converter\Model;
 
 use ReturnTypeWillChange;
-use Geissler\Converter\Model\Entry;
 
 /**
  * Abstract container to access groups of objects as "array"-object.
  *
  * @author Benjamin Geißler <benjamin.geissler@gmail.com>
  * @license MIT
+ *
+ * @template-implements \IteratorAggregate<int, mixed>
+ * @template-implements \ArrayAccess<int, mixed>
  */
 abstract class Container implements \IteratorAggregate, \ArrayAccess, \Countable
 {
diff --git a/src/Model/Entry.php b/src/Model/Entry.php
index ea540f7..5d31796 100644
--- a/src/Model/Entry.php
+++ b/src/Model/Entry.php
@@ -950,7 +950,7 @@ public function getInterviewer()
      * @param $issue
      * @return Entry
      */
-    public function setIssue($issue)
+    public function setIssue(string $issue)
     {
         $this->issue = $issue;
         return $this;
@@ -1582,7 +1582,7 @@ public function getSubmitted()
      * @param $title
      * @return Entry
      */
-    public function setTitle($title)
+    public function setTitle(string $title)
     {
         $this->title = $title;
         return $this;
@@ -1690,7 +1690,7 @@ public function getVersion()
      * @param $volume
      * @return Entry
      */
-    public function setVolume($volume)
+    public function setVolume(string $volume)
     {
         $this->volume = $volume;
         return $this;