diff --git a/.travis.yml b/.travis.yml
index 6a97fb599..6ddfe678e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -59,12 +59,12 @@ before_script:
 # Install composer dependencies
   - export PATH=~/.composer/vendor/bin:$PATH
   - composer validate
-  - composer install --prefer-dist
-  - if [[ $DB == PGSQL ]]; then composer require silverstripe/postgresql:2.0.x-dev --prefer-dist; fi
-  - if [[ $DB == SQLITE ]]; then composer require silverstripe/sqlite3:2.0.x-dev --prefer-dist; fi
-  - composer require silverstripe/config:1.0.x-dev silverstripe/admin:1.0.x-dev silverstripe/assets:1.0.x-dev silverstripe/versioned:1.0.x-dev --prefer-dist
-  - if [[ $PHPUNIT_TEST == cms ]] || [[ $BEHAT_TEST == cms ]]; then composer require silverstripe/cms:4.0.x-dev silverstripe/campaign-admin:1.0.x-dev silverstripe/siteconfig:4.0.x-dev silverstripe/reports:4.0.x-dev --prefer-dist; fi
+  - if [[ $DB == PGSQL ]]; then composer require silverstripe/postgresql:2.0.x-dev --no-update; fi
+  - if [[ $DB == SQLITE ]]; then composer require silverstripe/sqlite3:2.0.x-dev --no-update; fi
+  - composer require silverstripe/config:1.0.x-dev silverstripe/admin:1.0.x-dev silverstripe/assets:1.0.x-dev silverstripe/versioned:1.0.x-dev --no-update
+  - if [[ $PHPUNIT_TEST == cms ]] || [[ $BEHAT_TEST == cms ]]; then composer require silverstripe/cms:4.0.x-dev silverstripe/campaign-admin:1.0.x-dev silverstripe/siteconfig:4.0.x-dev silverstripe/reports:4.0.x-dev --no-update; fi
   - if [[ $PHPCS_TEST ]]; then composer global require squizlabs/php_codesniffer:^3 --prefer-dist --no-interaction --no-progress --no-suggest -o; fi
+  - composer install --prefer-dist --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile
 
 # Bootstrap dependencies
   - if [[ $PHPUNIT_TEST == cms ]] || [[ $BEHAT_TEST == cms ]]; then php ./cms/tests/bootstrap/mysite.php; fi