diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index ff9f8fc..fff9950 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -15,7 +15,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
+                php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
 
             fail-fast: false
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 32a98e5..433a830 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -15,7 +15,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
+                php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
 
             fail-fast: false
 
diff --git a/composer.json b/composer.json
index 6f0cfca..d644a22 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
 		"classmap": ["tests/phpstan/DibiFluentDynamicReturnTypeExtension.php"]
 	},
 	"require": {
-		"php": ">= 7.2",
+		"php": "7.2 - 8.3",
 		"dibi/dibi": "^4.0 || ^5.0"
 	},
 	"require-dev": {
@@ -40,8 +40,8 @@
 	},
 	"scripts": {
 		"coverage": "tester -C -d zend_extension=xdebug --coverage tests/coverage.html --coverage-src src tests",
-		"phpstan": "phpstan analyse --configuration tests/phpstan.neon",
-		"tests": "tester -C -p php8.3 tests"
+		"phpstan": "phpstan analyse --configuration phpstan.neon",
+		"tests": "tester -C tests"
 	},
 	"extra": {
 		"branch-alias": {
diff --git a/contributing.md b/contributing.md
index b5dd9e8..87b78fd 100644
--- a/contributing.md
+++ b/contributing.md
@@ -42,7 +42,13 @@ You need to install [Nette Tester](https://tester.nette.org/). The easiest way i
 Now you should be able to run tests. On unix-like systems run following command in your terminal:
 
 ```
-vendor/bin/tester -p php -c tests/php-unix.ini
+vendor/bin/tester -C tests
+```
+
+or use Composer script:
+
+```
+composer tests
 ```
 
 **Note:** the tests require these PHP extensions:
diff --git a/tests/phpstan.neon b/phpstan.neon
similarity index 94%
rename from tests/phpstan.neon
rename to phpstan.neon
index a1223c5..7f4b8d1 100644
--- a/tests/phpstan.neon
+++ b/phpstan.neon
@@ -2,7 +2,7 @@ parameters:
     level: 7
 
     paths:
-        - ../src
+        - src
 
     treatPhpDocTypesAsCertain: false
 
diff --git a/tests/php-unix.ini b/tests/php-unix.ini
deleted file mode 100644
index bd2fdc2..0000000
--- a/tests/php-unix.ini
+++ /dev/null
@@ -1,7 +0,0 @@
-[PHP]
-extension=ctype.so
-extension=json.so
-extension=sqlite3.so
-extension=tokenizer.so
-zend_extension=xdebug.so
-;extension_dir = "./ext"