diff --git a/.travis.yml b/.travis.yml
index a808149..ac3763d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,8 @@ before_script:
   - psql -c 'CREATE EXTENSION hstore' -U postgres -h 127.0.0.1 pomm_test
   - psql -c 'CREATE EXTENSION ltree' -U postgres -h 127.0.0.1 pomm_test
   - php vendor/atoum/atoum/bin/atoum --version
-install: composer install --dev
+install:
+    - composer install --dev
+    - composer update
 script: php vendor/atoum/atoum/bin/atoum --no-code-coverage -d sources/tests/Unit/
 
diff --git a/composer.json b/composer.json
index 3f0aec3..3bb9f0f 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         "psr/log": "~1.0"
     },
     "require-dev": {
-        "atoum/atoum" : "^2.8 || ^4.0"
+        "atoum/atoum" : "^3.0"
     },
     "autoload": {
         "psr-4": {