diff --git a/composer.json b/composer.json
index 3794c61..9c09bb6 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         "source": "https://github.com/jaxon-php/jaxon-flot"
     },
     "require": {
-        "jaxon-php/jaxon-core": "^3.0"
+        "jaxon-php/jaxon-core": "^3.1"
     },
     "autoload": {
         "psr-4": {