Improve build some more

.travis.yml

@@ -33,6 +33,7 @@ matrix:
       env:
         - deps=high
         - PHPSTAN=1
+        - SYMFONY_PHPUNIT_VERSION=7.5
     - php: nightly
   fast_finish: true
   allow_failures:
@@ -50,7 +51,7 @@ install:
   # flags to pass to install
   - flags="--ansi --prefer-dist --no-interaction --optimize-autoloader --no-suggest --no-progress"
   # update deps to latest in case of high deps build
-  - if [ "$deps" == "high" ]; then composer config platform.php 7.2.4; composer update $flags; fi
+  - if [ "$deps" == "high" ]; then composer config platform.php 7.4.0; composer update $flags; fi
   # install dependencies using system provided composer binary
   - composer install $flags
   # install dependencies using composer from source
@@ -62,11 +63,12 @@ before_script:
   - git config --global user.email travis@example.com
 
 script:
-  - ./vendor/bin/simple-phpunit
-  # Run PHPStan
   - if [[ $PHPSTAN == "1" ]]; then
-      bin/composer require --dev phpstan/phpstan:^0.12 phpunit/phpunit:^6.5 &&
+      bin/composer require --dev phpstan/phpstan:^0.12 phpunit/phpunit:^7.5 --no-update &&
+      bin/composer update phpstan/* phpunit/* sebastian/* --with-dependencies &&
       vendor/bin/phpstan analyse --configuration=phpstan/config.neon;
+    else
+      vendor/bin/simple-phpunit;
     fi
 
 before_deploy: