diff --git a/.travis.yml b/.travis.yml
index 3a94202c..934be369 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,36 +21,39 @@ matrix:
     fast_finish: true
     include:
           # Minimum supported Symfony version and latest PHP version
-        - php: 7.1
-          env: DEPENDENCIES="minimum" COVERAGE=true TEST_COMMAND="composer test-ci" SYMFONY_DEPRECATIONS_HELPER="weak" SYMFONY_PHPUNIT_VERSION="5.7"
+        - php: 7.2
+          env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" SYMFONY_DEPRECATIONS_HELPER="weak" SYMFONY_PHPUNIT_VERSION="5.7"
 
           # Test the latest stable release
+        - php: 5.5
+          env: SYMFONY_PHPUNIT_VERSION="5.7"
         - php: 5.6
           env: SYMFONY_PHPUNIT_VERSION="5.7"
         - php: 7.0
         - php: 7.1
         - php: 7.2
+          env: COVERAGE=true TEST_COMMAND="composer test-ci"
 
           # Test LTS versions
-        - php: 5.5
-          env: DEPENDENCIES="symfony/lts:^2"
-        - php: 5.5
-          env: DEPENDENCIES="symfony/lts:^3"
+        - php: 7.2
+          env: DEPENDENCIES="dunglas/symfony-lock:^2"
+        - php: 7.2
+          env: DEPENDENCIES="dunglas/symfony-lock:^3"
+        - php: 7.2
+          env: DEPENDENCIES="dunglas/symfony-lock:^4" STABILITY="rc"
 
           # Latest commit to master
-        - php: 7.1
-          env: DEPENDENCIES="dev"
+        - php: 7.2
+          env: STABILITY="dev"
 
     allow_failures:
-          # dev-master is allowed to fail.
-        - php: 7.1
-          env: DEPENDENCIES="dev"
+          # dev stability is allowed to fail.
+        - env: STABILITY="dev"
 
 before_install:
     - if [[ $COVERAGE != true ]]; then phpenv config-rm xdebug.ini || true; fi
-    - if [ "$DEPENDENCIES" = "minimum" ]; then COMPOSER_FLAGS="--prefer-stable --prefer-lowest"; fi;
-    - if [ "$DEPENDENCIES" = "dev" ]; then composer config minimum-stability dev; fi;
-    - if [[ $DEPENDENCIES == *"/"* ]]; then composer require --no-update $DEPENDENCIES; fi;
+    - if ! [ -z "$STABILITY" ]; then composer config minimum-stability ${STABILITY}; fi;
+    - if ! [ -v "$DEPENDENCIES" ]; then composer require --no-update ${DEPENDENCIES}; fi;
 
 install:
     # To be removed when this issue will be resolved: https://github.com/composer/composer/issues/5355
diff --git a/composer.json b/composer.json
index 20b288f0..636ef6a2 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
     },
     "require-dev": {
         "guzzlehttp/psr7": "^1.0",
-        "matthiasnoback/symfony-dependency-injection-test": "^1.1 || ^2.0",
+        "matthiasnoback/symfony-dependency-injection-test": "^1.1 || ^2.3",
         "nyholm/nsa": "^1.1",
         "php-http/buzz-adapter": "^0.3",
         "php-http/curl-client": "^1.0",