diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3feaeef3..54dfa767 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -29,4 +29,4 @@ jobs:
       os: >-
         ['ubuntu-latest', 'windows-latest']
       php: >-
-        ['8.1', '8.2', '8.3']
+        ['8.1', '8.2', '8.3', '8.4']
diff --git a/.github/workflows/composer-require-checker.yml b/.github/workflows/composer-require-checker.yml
index a857bce6..a93390b1 100644
--- a/.github/workflows/composer-require-checker.yml
+++ b/.github/workflows/composer-require-checker.yml
@@ -31,4 +31,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.1', '8.2', '8.3']
+        ['8.1', '8.2', '8.3', '8.4']
diff --git a/.github/workflows/rector.yml b/.github/workflows/rector.yml
index 35411d0a..b2294456 100644
--- a/.github/workflows/rector.yml
+++ b/.github/workflows/rector.yml
@@ -20,4 +20,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.3']
+        ['8.4']
diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index e33eca86..d03874dc 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -29,4 +29,4 @@ jobs:
       os: >-
         ['ubuntu-latest']
       php: >-
-        ['8.1', '8.2', '8.3']
+        ['8.1', '8.2', '8.3', '8.4']
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9bd47fe..c79e1f69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -50,6 +50,7 @@
   method when non-positive value is passed (@vjik)
 - Chg #219: Don't check correctness of current page in `PaginatorInterface::isOnLastPage()` method (@vjik)
 - Chg #219: Rename `PaginatorException` to `InvalidPageException` (@vjik)
+- Chg #211: Change PHP constraint in `composer.json` to `~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0` (@vjik)
 
 ## 1.0.1 January 25, 2023
 
diff --git a/composer.json b/composer.json
index 869e8fd2..0b716589 100644
--- a/composer.json
+++ b/composer.json
@@ -31,17 +31,17 @@
         }
     ],
     "require": {
-        "php": "^8.1",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
         "ext-mbstring": "*",
         "yiisoft/arrays": "^3.0"
     },
     "require-dev": {
-        "maglnet/composer-require-checker": "^4.7",
-        "phpunit/phpunit": "^10",
-        "rector/rector": "^2.0",
-        "roave/infection-static-analysis-plugin": "^1.34",
-        "spatie/phpunit-watcher": "^1.23",
-        "vimeo/psalm": "^5.20"
+        "maglnet/composer-require-checker": "^4.7.1",
+        "phpunit/phpunit": "^10.5.45",
+        "rector/rector": "^2.0.9",
+        "roave/infection-static-analysis-plugin": "^1.35",
+        "spatie/phpunit-watcher": "^1.24",
+        "vimeo/psalm": "^5.26.1 || ^6.6"
     },
     "autoload": {
         "psr-4": {
@@ -55,6 +55,7 @@
     },
     "config": {
         "sort-packages": true,
+        "bump-after-update": "dev",
         "allow-plugins": {
             "infection/extension-installer": true,
             "composer/package-versions-deprecated": true
diff --git a/src/Processor/DataProcessorException.php b/src/Processor/DataProcessorException.php
index bb8f62d0..f7abb545 100644
--- a/src/Processor/DataProcessorException.php
+++ b/src/Processor/DataProcessorException.php
@@ -10,6 +10,8 @@
  * Exception occurred during data processing.
  *
  * @see DataProcessorInterface
+ *
+ * @psalm-suppress ClassMustBeFinal We assume that the class may be extended in userland.
  */
 class DataProcessorException extends RuntimeException
 {
diff --git a/src/Reader/DataReaderException.php b/src/Reader/DataReaderException.php
index 1d08c7fe..87f2b35c 100644
--- a/src/Reader/DataReaderException.php
+++ b/src/Reader/DataReaderException.php
@@ -10,6 +10,8 @@
  * Exception occurred during reading data.
  *
  * @see DataReaderInterface
+ *
+ * @psalm-suppress ClassMustBeFinal We assume that the class may be extended in userland.
  */
 class DataReaderException extends RuntimeException
 {
diff --git a/src/Reader/OrderHelper.php b/src/Reader/OrderHelper.php
index f6868057..bcf01eab 100644
--- a/src/Reader/OrderHelper.php
+++ b/src/Reader/OrderHelper.php
@@ -30,6 +30,10 @@ final class OrderHelper
     public static function stringToArray(string $orderString): array
     {
         $order = [];
+
+        /**
+         * @var string[] $parts We use correct regexp here, so `preg_split` never returns false.
+         */
         $parts = preg_split('/\s*,\s*/', trim($orderString), -1, PREG_SPLIT_NO_EMPTY);
 
         foreach ($parts as $part) {
diff --git a/src/Writer/DataWriterException.php b/src/Writer/DataWriterException.php
index c247d9d2..be631e1d 100644
--- a/src/Writer/DataWriterException.php
+++ b/src/Writer/DataWriterException.php
@@ -10,6 +10,8 @@
  * Exception occurred during writing or deleting data.
  *
  * @see DataWriterInterface
+ *
+ * @psalm-suppress ClassMustBeFinal We assume that the class may be extended in userland.
  */
 class DataWriterException extends RuntimeException
 {