diff --git a/composer.json b/composer.json
index 5f20730c..1d2a1e71 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
         "ext-pcre": "*",
         "ext-xmlreader" : "*",
         "lib-libxml" : "*",
-        "sweetrdf/rdf-helpers": "^1.0"
+        "sweetrdf/rdf-helpers": "^2.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.0",