diff --git a/.travis.yml b/.travis.yml
index 02ac5a1c805..aac89618c42 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -133,7 +133,7 @@ install:
   if [ "$TRAVIS_PHP_VERSION" = '5.6' ] || [ "$TRAVIS_PHP_VERSION" = '7.0' ] || [ "$TRAVIS_PHP_VERSION" = '7.1' ]; then
     composer -n require phpunit/phpunit ^5
   fi
-  if [ "$TRAVIS_PHP_VERSION" = '7.2' ] || [ "$TRAVIS_PHP_VERSION" = 'nightly' ]; then
+  if [ "$TRAVIS_PHP_VERSION" = '7.2' ] || [ "$TRAVIS_PHP_VERSION" = '7.3' ] || [ "$TRAVIS_PHP_VERSION" = 'nightly' ]; then
     composer -n require phpunit/phpunit ^5
   fi
   echo
@@ -168,13 +168,9 @@ before_script:
     echo "Set timezone"
     echo 'date.timezone = "Europe/Paris"' >> ~/.phpenv/versions/$PHP_VERSION_NAME/etc/php.ini
     if [ "$TRAVIS_PHP_VERSION" = '5.4' ]; then
-      #echo
-      #echo "Enabling APC for PHP <= 5.4"
-      #   Documentation says it should be available for PHP <= 5.6 but it's not for 5.5 and 5.6!
-      #echo 'extension = apc.so' >> ~/.phpenv/versions/$PHP_VERSION_NAME/etc/php.ini
+      # Documentation says it should be available for all PHP versions but it's not for 5.5 and 5.6, 7.0, 7.1, 7.2 and nightly!
       echo
       echo "Enabling Memcached for PHP <= 5.4"
-      #   Documentation says it should be available for all PHP versions but it's not for 5.5 and 5.6, 7.0, 7.1, 7.2 and nightly!
       echo 'extension = memcached.so' >> ~/.phpenv/versions/$PHP_VERSION_NAME/etc/php.ini
     fi
     phpenv rehash
@@ -256,7 +252,7 @@ before_script:
   # enable php-fpm
   - sudo cp ~/.phpenv/versions/$(phpenv version-name)/etc/php-fpm.conf.default ~/.phpenv/versions/$(phpenv version-name)/etc/php-fpm.conf
   - |
-    if [ "$TRAVIS_PHP_VERSION" = '7.0' ] || [ "$TRAVIS_PHP_VERSION" = '7.1' ] || [ "$TRAVIS_PHP_VERSION" = '7.2' ] || [ "$TRAVIS_PHP_VERSION" = 'nightly' ]; then
+    if [ "$TRAVIS_PHP_VERSION" = '7.0' ] || [ "$TRAVIS_PHP_VERSION" = '7.1' ] || [ "$TRAVIS_PHP_VERSION" = '7.2' ] || [ "$TRAVIS_PHP_VERSION" = '7.3' ] || [ "$TRAVIS_PHP_VERSION" = 'nightly' ]; then
       # Copy the included pool
       sudo cp ~/.phpenv/versions/$(phpenv version-name)/etc/php-fpm.d/www.conf.default ~/.phpenv/versions/$(phpenv version-name)/etc/php-fpm.d/www.conf
     fi