diff --git a/.gitignore b/.gitignore
index 17f57f67..2dc50e82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,2 @@
-/.php-cs-fixer/
-/.phpstan/
-/.phpunit/
-/.tmp/
+/.build/
 /vendor/
diff --git a/.php_cs b/.php_cs
index bc92a6df..0a00e424 100644
--- a/.php_cs
+++ b/.php_cs
@@ -27,15 +27,14 @@ $config->getFinder()
     ->ignoreDotFiles(false)
     ->in(__DIR__)
     ->exclude([
+        '.build',
         '.github',
-        '.php-cs-fixer',
-        '.phpstan',
         '.travis',
     ])
     ->name('.php_cs');
 
 $directory = \getenv('TRAVIS') ? \getenv('HOME') : __DIR__;
 
-$config->setCacheFile($directory . '/.php-cs-fixer/.php_cs.cache');
+$config->setCacheFile($directory . '/.build/php-cs-fixer/.php_cs.cache');
 
 return $config;
diff --git a/.travis.yml b/.travis.yml
index 0d4d2d49..9aab504b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,9 +7,9 @@ env:
 cache:
   directories:
     - $HOME/.composer/cache
-    - $HOME/.php-cs-fixer
-    - $HOME/.phpstan
-    - $HOME/.phpunit
+    - $HOME/.build/php-cs-fixer
+    - $HOME/.build/phpstan
+    - $HOME/.build/phpunit
 
 stages:
   - style
@@ -32,29 +32,30 @@ jobs:
         - composer install
 
       before_script:
-        - mkdir -p $HOME/.php-cs-fixer
+        - mkdir -p $HOME/.build/php-cs-fixer
 
       script:
         - vendor/bin/php-cs-fixer fix --config=.php_cs --diff --dry-run --verbose
 
     - stage: Stan
 
-      php: 7.2
+      php: 7.3
 
       before_install:
         - source .travis/xdebug.sh
         - xdebug-disable
         - composer validate
         - if [[ -n "$GITHUB_TOKEN" ]]; then composer config github-oauth.github.com $GITHUB_TOKEN; fi
+        - if [[ "$TRAVIS_PHP_VERSION" == "7.3" ]]; then composer remove --dev localheinz/php-cs-fixer-config; fi
 
       install:
         - composer install
 
       before_script:
-        - mkdir -p $HOME/.phpstan
+        - mkdir -p $HOME/.build/phpstan
 
       script:
-        - vendor/bin/phpstan analyse --configuration=phpstan.neon src test
+        - vendor/bin/phpstan analyse --configuration=phpstan.neon
 
     - &TEST
 
@@ -69,9 +70,9 @@ jobs:
         - xdebug-disable
         - composer validate
         - if [[ -n "$GITHUB_TOKEN" ]]; then composer config github-oauth.github.com $GITHUB_TOKEN; fi
+        - if [[ "$TRAVIS_PHP_VERSION" == "7.3" ]]; then composer remove --dev localheinz/php-cs-fixer-config; fi
 
       install:
-        - if [[ "$TRAVIS_PHP_VERSION" == "7.3" ]]; then composer remove --dev localheinz/php-cs-fixer-config; fi
         - if [[ "$WITH_LOWEST" == "true" ]]; then composer update --prefer-lowest; fi
         - if [[ "$WITH_LOCKED" == "true" ]]; then composer install; fi
         - if [[ "$WITH_HIGHEST" == "true" ]]; then composer update; fi
diff --git a/Makefile b/Makefile
index 1768f9e9..aafefa11 100644
--- a/Makefile
+++ b/Makefile
@@ -6,12 +6,12 @@ coverage: vendor
 	vendor/bin/phpunit --configuration=test/Integration/phpunit.xml --coverage-text
 
 cs: vendor
-	mkdir -p .php-cs-fixer
+	mkdir -p .build/php-cs-fixer
 	vendor/bin/php-cs-fixer fix --config=.php_cs --diff --verbose
 
 stan: vendor
-	mkdir -p .phpstan
-	vendor/bin/phpstan analyse --configuration=phpstan.neon src test
+	mkdir -p .build/phpstan
+	vendor/bin/phpstan analyse --configuration=phpstan.neon
 
 test: vendor
 	vendor/bin/phpunit --configuration=test/Integration/phpunit.xml
diff --git a/phpstan.neon b/phpstan.neon
index 6ac7931b..c2e1da9d 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -11,4 +11,7 @@ parameters:
 		- '#Method Localheinz\\Composer\\Normalize\\Command\\NormalizeCommand::__construct\(\) has parameter \$differ with null as default value.#'
 		- '#Method Localheinz\\Composer\\Normalize\\Command\\NormalizeCommand::__construct\(\) has parameter \$formatter with null as default value.#'
 		- '#Method Localheinz\\Composer\\Normalize\\Command\\NormalizeCommand::indentFrom\(\) has a nullable return type declaration.#'
-	tmpDir: %currentWorkingDirectory%/.phpstan
+	paths:
+		- src
+		- test
+	tmpDir: %currentWorkingDirectory%/.build/phpstan
diff --git a/test/Integration/NormalizeTest.php b/test/Integration/NormalizeTest.php
index e9588cc1..66eb1e70 100644
--- a/test/Integration/NormalizeTest.php
+++ b/test/Integration/NormalizeTest.php
@@ -1035,7 +1035,7 @@ private static function temporaryDirectory(): string
         $projectDirectory = \realpath(__DIR__ . '/../..');
 
         return \sprintf(
-            '%s/.tmp',
+            '%s/.build/fixture',
             $projectDirectory
         );
     }
diff --git a/test/Integration/phpunit.xml b/test/Integration/phpunit.xml
index a3ea0d20..c156a382 100644
--- a/test/Integration/phpunit.xml
+++ b/test/Integration/phpunit.xml
@@ -9,7 +9,7 @@
     beStrictAboutTodoAnnotatedTests="true"
     bootstrap="../../vendor/autoload.php"
     cacheResult="true"
-    cacheResultFile="../../.phpunit/unit.cache"
+    cacheResultFile="../../.build/phpunit/unit.cache"
     colors="true"
     columns="max"
     convertErrorsToExceptions="true"