diff --git a/.github/workflows/default.yml b/.github/workflows/default.yml
index b306ede..22368bd 100644
--- a/.github/workflows/default.yml
+++ b/.github/workflows/default.yml
@@ -12,11 +12,16 @@ jobs:
       - name: "Switch default PHP Version to 8.1"
         run: sudo update-alternatives --set php /usr/bin/php8.1
 
+      - name: "Print versions"
+        run: |
+          php --version
+          tools/phpstan --version
+
       - name: "Install Composer dependencies"
-        run: composer install
+        run: composer install --no-dev
 
       - name: "PHPStan"
-        run: vendor/bin/phpstan
+        run: tools/phpunit
 
   composer_normalize:
     runs-on: ubuntu-20.04
@@ -47,11 +52,13 @@ jobs:
       - name: "Switch default PHP to: ${{ matrix.version }}"
         run: sudo update-alternatives --set php ${{ matrix.version }}
 
-      - name: "Print PHP version"
-        run: php --version
+      - name: "Print versions"
+        run: |
+          php --version
+          tools/phpunit --version
 
-      - name: "Print PHPUnit --version"
-        run: tools/phpunit --version
+      - name: "Install Composer dependencies"
+        run: composer install
 
       - name: "PHPUnit"
         run: tools/phpunit
\ No newline at end of file
diff --git a/.phive/phars.xml b/.phive/phars.xml
index ccc38d9..434c078 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
   <phar name="phpunit" version="^10.3.1" installed="10.3.1" location="./tools/phpunit" copy="true"/>
+  <phar name="phpstan" version="^1.10.28" installed="1.10.28" location="./tools/phpstan" copy="true"/>
 </phive>
diff --git a/Makefile b/Makefile
index e3c07c0..8199aa0 100644
--- a/Makefile
+++ b/Makefile
@@ -23,4 +23,4 @@ test:
 
 .PHONY: lint
 lint:
-	docker exec psr3-log-context-container vendor/bin/phpstan
\ No newline at end of file
+	docker exec psr3-log-context-container tools/phpstan
\ No newline at end of file
diff --git a/composer.json b/composer.json
index c61c3b8..7667dde 100644
--- a/composer.json
+++ b/composer.json
@@ -16,9 +16,6 @@
   "require": {
     "php": ">=8.1"
   },
-  "require-dev": {
-    "phpstan/phpstan": "^1.10"
-  },
   "scripts": {
     "normalize": "./bin/json-normalize composer.json 2"
   },
diff --git a/phpstan.neon b/phpstan.neon
index d461cdd..484be13 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,4 @@
 parameters:
   level: 9
   paths:
-    - src
-    - tests
\ No newline at end of file
+    - src
\ No newline at end of file
diff --git a/tools/phpstan b/tools/phpstan
new file mode 100755
index 0000000..c5cab46
Binary files /dev/null and b/tools/phpstan differ