diff --git a/composer.json b/composer.json
index 124ca50a6ed9d16540220e3c0af53f5b41764096..fc3283a12803abfe188d320498625338eb390690 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
         "source": "https://gitlab.lakedrops.com/lakedrops/dotenv/tree/master"
     },
     "require": {
-        "php": ">=5.4.5",
+        "php": ">=5.6",
         "symfony/dotenv": "^3.3"
     },
     "autoload": {