diff --git a/.travis.yml b/.travis.yml
index 98039569..14062981 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,13 +3,11 @@ language: php
 
 php:
   - hhvm
-  - 7.2
   - 7.1
   - 7.0
   - 5.6
   - 5.5
   - 5.4
-  - 5.3
 
 # This triggers builds to run on the new (faster) TravisCI infrastructure.
 # See: http://docs.travis-ci.com/user/workers/container-based-infrastructure/
@@ -24,11 +22,16 @@ env:
     - PATH="${HOME}/bin:${PATH}"
 
 matrix:
+  include:
+    - php: 7.2
+      env: SNIFF=1
+    - php: 5.3
+      # As 'trusty' is not supporting PHP 5.2/5.3 anymore, we need to force using 'precise'.
+      dist: precise
+
   allow_failures:
     - php: hhvm
-    - php: 5.5
-    - php: 5.4
-    - php: 5.3
+
   fast_finish: true
 
 before_install:
@@ -43,5 +46,6 @@ script:
   - find . -type f -name "*.php" -print0 | xargs -0 -n1 php -l
   - composer validate
   - travis_wait composer install --no-interaction --no-progress --no-scripts --no-suggest --optimize-autoloader --prefer-dist --verbose
-  - ./vendor/bin/phpcs --standard=psr2 src/
+  - if [[ "$SNIFF" == "1" ]]; then composer install-codestandards; fi
+  - if [[ "$SNIFF" == "1" ]]; then ./vendor/bin/phpcs; fi
   - ./vendor/bin/security-checker -n security:check --end-point=http://security.sensiolabs.org/check_lock