diff --git a/composer.json b/composer.json
index d0552cadd..b83c46970 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "ext-dom": "*",
         "ext-zlib": "*",
 
-        "robrichards/xmlseclibs": "^2.0",
+        "robrichards/xmlseclibs": "^2.0|^3.0",
         "psr/log": "~1.0"
     },
     "require-dev": {