diff --git a/.github/workflows/infection.yaml b/.github/workflows/infection.yaml
deleted file mode 100644
index c5adb1e..0000000
--- a/.github/workflows/infection.yaml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: Mutations
-on: push
-jobs:
-    infection:
-        runs-on: ubuntu-latest
-        steps:
-            -   uses: actions/checkout@v3
-            -   uses: shivammathur/setup-php@v2
-                with:
-                    php-version: '8.2'
-                    tools: composer:v2
-                    coverage: pcov
-            -   uses: actions/cache@v3
-                with:
-                    path: '**/vendor'
-                    key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-                    restore-keys: |
-                        ${{ runner.os }}-composer-
-            -   uses: php-actions/composer@v6
-                with:
-                    args: --prefer-dist
-                    php_version: '8.2'
-
-            -   name: Infection
-                run: |
-                    wget -q https://github.com/infection/infection/releases/download/0.26.18/infection.phar
-                    wget -q https://github.com/infection/infection/releases/download/0.26.18/infection.phar.asc
-                    chmod +x infection.phar
-                    ./infection.phar
-
-            -   name: Store infection log
-                uses: actions/upload-artifact@v3
-                with:
-                    path: infection.log
diff --git a/.github/workflows/phpstan-6.yaml b/.github/workflows/phpstan-6.yaml
deleted file mode 100644
index fcd8a2d..0000000
--- a/.github/workflows/phpstan-6.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-name: PHPStan level 6
-on: push
-jobs:
-  phpstan6:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: '**/vendor'
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-composer-
-      - uses: php-actions/composer@v6
-        with:
-          args: --prefer-dist
-          php_version: '8.2'
-
-      - name: PHPStan
-        uses: php-actions/phpstan@v3
-        with:
-          path: src/
-          level: 8
diff --git a/.github/workflows/phpstan-7.yaml b/.github/workflows/phpstan-7.yaml
deleted file mode 100644
index b8ca10d..0000000
--- a/.github/workflows/phpstan-7.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-name: PHPStan level 7
-on: push
-jobs:
-  phpstan7:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: '**/vendor'
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-composer-
-      - uses: php-actions/composer@v6
-        with:
-          args: --prefer-dist
-          php_version: '8.2'
-
-      - name: PHPStan
-        uses: php-actions/phpstan@v3
-        with:
-          path: src/
-          level: 8
diff --git a/.github/workflows/phpstan-8.yaml b/.github/workflows/phpstan-8.yaml
deleted file mode 100644
index addb6be..0000000
--- a/.github/workflows/phpstan-8.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-name: PHPStan level 8
-on: push
-jobs:
-  phpstan8:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: '**/vendor'
-          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-composer-
-      - uses: php-actions/composer@v6
-        with:
-          args: --prefer-dist
-          php_version: '8.2'
-
-      - name: PHPStan
-        uses: php-actions/phpstan@v3
-        with:
-          path: src/
-          level: 8
diff --git a/.github/workflows/phpunit.yaml b/.github/workflows/phpunit.yaml
deleted file mode 100644
index cc4fc19..0000000
--- a/.github/workflows/phpunit.yaml
+++ /dev/null
@@ -1,30 +0,0 @@
-name: PHPUnit
-on: push
-jobs:
-    phpunit:
-        runs-on: ubuntu-latest
-        steps:
-            -   uses: actions/checkout@v3
-            -   uses: shivammathur/setup-php@v2
-                with:
-                    php-version: '8.2'
-                    tools: composer:v2
-                    coverage: pcov
-            -   uses: actions/cache@v3
-                with:
-                    path: '**/vendor'
-                    key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-                    restore-keys: |
-                        ${{ runner.os }}-composer-
-            -   uses: php-actions/composer@v6
-                with:
-                    args: --prefer-dist
-                    php_version: '8.2'
-
-            -   name: Run tests & generate Coverage
-                run: bin/phpunit --coverage-html var/coverage
-
-            -   name: Store coverage files
-                uses: actions/upload-artifact@v3
-                with:
-                    path: var/coverage
diff --git a/.github/workflows/quality.yaml b/.github/workflows/quality.yaml
index d69054c..56fde70 100644
--- a/.github/workflows/quality.yaml
+++ b/.github/workflows/quality.yaml
@@ -1,37 +1,78 @@
-name: Quality (PHPStan lvl 5)
-on: push
+name: Quality
+
+on:
+  push:
+    branches: [main, master, next]
+  pull_request:
+    branches: [main, master, next]
+
+env:
+  PHP_VERSION: '8.4'
+
 jobs:
-    cs-fixer:
-        runs-on: ubuntu-latest
-        steps:
-            -   uses: actions/checkout@v3
-            -   uses: shivammathur/setup-php@v2
-                with:
-                    php-version: '8.2'
-            -   name: Cs-Fixer
-                run: |
-                    wget -q https://cs.symfony.com/download/php-cs-fixer-v3.phar -O php-cs-fixer
-                    chmod a+x php-cs-fixer
-                    PHP_CS_FIXER_IGNORE_ENV=true ./php-cs-fixer fix --dry-run --config=.php-cs-fixer.dist.php
-
-    phpstan:
-        runs-on: ubuntu-latest
-        steps:
-            -   uses: actions/checkout@v3
-            -   uses: actions/cache@v3
-                with:
-                    path: '**/vendor'
-                    key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
-                    restore-keys: |
-                        ${{ runner.os }}-composer-
-            -   uses: php-actions/composer@v6
-                with:
-                    args: --prefer-dist
-                    php_version: '8.2'
-
-            -   name: PHPStan
-                uses: php-actions/phpstan@v3
-                with:
-                    path: src/
-                    args: --level=5
+  quality:
+    name: PHP-CS-Fixer, PHPStan, Rector, PHPUnit, Infection, PHPSpec
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ env.PHP_VERSION }}
+          tools: composer:v2
+          coverage: pcov
+
+      - uses: actions/cache@v4
+        with:
+          path: vendor
+          key: ${{ runner.os }}-composer-${{ hashFiles('composer.lock', 'composer.json') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer install --no-interaction --prefer-dist
+
+      - name: PHP-CS-Fixer
+        run: |
+          if [ -f vendor/bin/php-cs-fixer ] && [ -d src ]; then
+            vendor/bin/php-cs-fixer fix src --dry-run
+          fi
+
+      - name: PHPStan
+        run: |
+          if [ ! -d src ]; then exit 0; fi
+          if [ -f vendor/bin/phpstan ]; then
+            vendor/bin/phpstan analyse src --level=8 --no-progress
+          elif [ -f vendor/phpstan/phpstan/phpstan ]; then
+            php vendor/phpstan/phpstan/phpstan analyse src --level=8 --no-progress
+          fi
+
+      - name: Rector
+        run: |
+          if [ -f bin/rector ]; then
+            bin/rector process --dry-run
+          elif [ -f vendor/bin/rector ]; then
+            vendor/bin/rector process --dry-run
+          fi
+
+      - name: PHPUnit
+        run: |
+          if [ -f phpunit.xml ] || [ -f phpunit.xml.dist ]; then
+            if [ -f infection.json ] || [ -f infection.json.dist ]; then
+              vendor/bin/phpunit --coverage-html var/coverage --coverage-text
+            else
+              vendor/bin/phpunit
+            fi
+          fi
+
+      - name: Infection
+        run: |
+          if [ -f infection.json ] || [ -f infection.json.dist ]; then
+            vendor/bin/infection run --no-progress --min-msi=0 --min-covered-msi=0
+          fi
 
+      - name: PHPSpec
+        run: |
+          if [ -f bin/phpspec ] && [ -d spec ]; then
+            bin/phpspec run spec
+          fi
diff --git a/.github/workflows/rector.yaml b/.github/workflows/rector.yaml
deleted file mode 100644
index 9596da1..0000000
--- a/.github/workflows/rector.yaml
+++ /dev/null
@@ -1,32 +0,0 @@
-# github action that checks code with Rector
-name: Rector
-
-on:
-    pull_request: null
-
-jobs:
-    rector:
-        runs-on: ubuntu-latest
-        if: github.event.pull_request.head.repo.full_name == 'php-etl/string-expression-language'
-        steps:
-            -
-                if: github.event.pull_request.head.repo.full_name == github.repository
-                uses: actions/checkout@v3
-
-            -
-                uses: shivammathur/setup-php@v2
-                with:
-                    php-version: '8.2'
-                    coverage: none
-
-            -   uses: "ramsey/composer-install@v2"
-
-            -   run: bin/rector --ansi
-
-            -
-                # commit only to core contributors who have repository access
-                uses: stefanzweifel/git-auto-commit-action@v4
-                with:
-                    commit_message: '[rector] Rector fixes'
-                    commit_author: 'GitHub Action <actions@github.com>'
-                    commit_user_email: 'action@github.com'
diff --git a/composer.json b/composer.json
index 57d3f36..678e2c1 100644
--- a/composer.json
+++ b/composer.json
@@ -17,8 +17,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^10.0",
-        "rector/rector": "^2.0",
-        "phpstan/phpstan": "^2.2",
+        "rector/rector": "^2.3",
+        "phpstan/phpstan": "^2.1",
         "friendsofphp/php-cs-fixer": "^3.38"
     },
     "autoload": {
diff --git a/composer.lock b/composer.lock
index eeb2235..4d8e0cd 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "0d32a85e43f180b0741a98ce31d293a6",
+    "content-hash": "c0688a3e58b9ef9611d947087fb341c1",
     "packages": [
         {
             "name": "psr/cache",
@@ -1378,11 +1378,11 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "2.2.x-dev",
+            "version": "2.1.40",
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/4a1379b1e4a1b0fe04ab20efc25a473a359e1e12",
-                "reference": "4a1379b1e4a1b0fe04ab20efc25a473a359e1e12",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/9b2c7aeb83a75d8680ea5e7c9b7fca88052b766b",
+                "reference": "9b2c7aeb83a75d8680ea5e7c9b7fca88052b766b",
                 "shasum": ""
             },
             "require": {
@@ -1391,7 +1391,6 @@
             "conflict": {
                 "phpstan/phpstan-shim": "*"
             },
-            "default-branch": true,
             "bin": [
                 "phpstan",
                 "phpstan.phar"
@@ -1428,7 +1427,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2026-03-11T13:18:18+00:00"
+            "time": "2026-02-23T15:04:35+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",