diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..e959921
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,23 @@
+name: "Tests"
+
+on: [push, pull_request]
+
+jobs:
+    tests:
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                php: [8.2, 8.3]
+
+            fail-fast: false
+
+        name: PHP ${{matrix.php}}
+
+        steps:
+            - uses: actions/checkout@v4
+            - uses: shivammathur/setup-php@v2
+              with:
+                  php-version: ${{ matrix.php }}
+                  coverage: none
+
+            - run: make ci
diff --git a/.gitignore b/.gitignore
index de4a392..9902d7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
+/bin
 /vendor
 /composer.lock
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..7370b48
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,42 @@
+.DEFAULT_GOAL := help
+
+help:
+	@printf "\033[33mUsage:\033[0m\n  make [target] [arg=\"val\"...]\n\n\033[33mTargets:\033[0m\n"
+	@grep -E '^[-a-zA-Z0-9_\.\/]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[32m%-15s\033[0m %s\n", $$1, $$2}'
+
+.PHONY: install
+install: install-composer vendor ## Installs all project dependencies
+
+.PHONY: install-composer
+install-composer:
+	@[ -f bin/composer ] \
+		|| (echo '> Installing composer...' \
+		&& php -r 'copy("https://getcomposer.org/installer", "composer-setup.php");' \
+		&& php -r 'if (hash_file("sha384", "composer-setup.php") === file_get_contents("https://composer.github.io/installer.sig")) { echo "Installer verified"; } else { echo "Installer corrupt"; unlink("composer-setup.php"); } echo PHP_EOL;' \
+		&& mkdir -p bin \
+		&& php composer-setup.php --install-dir=bin --filename=composer --2 \
+		&& rm composer-setup.php)
+
+vendor: composer.json $(wildcard composer.lock)
+	@echo '> composer install...' \
+		&& bin/composer install \
+		&& echo ''
+
+.PHONY: ci
+ci: phplint phpstan tester ## Runs complete CI suite
+
+.PHONY: phplint
+phplint: install
+	@echo '> PHP linter ...'
+	@php vendor/bin/parallel-lint Simplex/ tests/ --colors --no-progress
+	@echo ''
+
+.PHONY: phpstan
+phpstan: install
+	@echo '> PHPStan ...'
+	@php vendor/bin/phpstan analyse --no-progress
+
+.PHONY: tester
+tester: install
+	@echo '> tester ...'
+	@php vendor/bin/tester tests/ -C --colors
diff --git a/composer.json b/composer.json
index c6c9cd8..49266c6 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,22 @@
 		"ext-bcmath": "*",
 		"php": ">=8.2"
 	},
+	"require-dev": {
+		"php-parallel-lint/php-parallel-lint": "^1.3",
+		"php-parallel-lint/php-console-highlighter": "^1.0",
+		"phpstan/phpstan": "^1.10",
+		"phpstan/extension-installer": "^1.3",
+		"phpstan/phpstan-strict-rules": "^1.5",
+		"phpstan/phpstan-deprecation-rules": "^1.1",
+		"nette/tester": "^2.5",
+		"tracy/tracy": "^2.10"
+	},
 	"autoload": {
 		"files": ["Simplex/simplex.php"]
+	},
+	"config": {
+		"allow-plugins": {
+			"phpstan/extension-installer": true
+		}
 	}
 }
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..adb8db0
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,5 @@
+parameters:
+	level: max
+	paths:
+		- Simplex/
+		- tests/
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..5580039
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Simplex\Tests;
+
+use Tester\Environment;
+
+
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/../Simplex/simplex.php';
+
+Environment::setup();