diff --git a/composer.json b/composer.json
index fe371d781aaf3f81f2bffa7e9c3bfc87d33cb5fc..1835b2c2fab72cccd78fe83d859625b4d5bee5e8 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     },
     "require": {
         "php": "~5.3",
-        "simplesamlphp/saml2": "~0.3",
+        "simplesamlphp/saml2": "~1.5",
         "simplesamlphp/xmlseclibs": "~1.3.2",
         "whitehat101/apr1-md5": "~1.0"
     },