diff --git a/composer.json b/composer.json
index 6f0635b5774..0d7dc3d2fe7 100644
--- a/composer.json
+++ b/composer.json
@@ -45,7 +45,7 @@
     "ext-json": "*",
     "ext-libxml": "*",
     "ext-mbstring": "*",
-    "ext-psr": "0.6.1",
+    "ext-psr": "^0.6",
     "ext-xml": "*",
     "codeception/codeception": "^2.5",
     "friendsofphp/php-cs-fixer": "~2.0",