diff --git a/composer.json b/composer.json
index aebb97d..d2fec89 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "symfony/yaml"  : "^3.4"
     },
     "require-dev" : {
-        "friendsofphp/php-cs-fixer": "^2.18"
+        "friendsofphp/php-cs-fixer": "2.18.0"
     },
     "replace" : {
         "jeromeschneider/baikal" : "self.version"