diff --git a/composer.json b/composer.json
index bbfae3c..4965de2 100644
--- a/composer.json
+++ b/composer.json
@@ -10,8 +10,8 @@
     },
     "require": {
         "php": ">=5.6.0",
-        "symfony/symfony": "^2.8|^3.0|^4.0",
-        "twbs/bootstrap": "^3.0",
+        "symfony/symfony": "^2.8.0|^3.0.0|^4.0.0",
+        "twbs/bootstrap": "^3.0.0",
         "components/jquery":  "^1.12"
     }
 }