diff --git a/composer.json b/composer.json
index 21651a4..7b44452 100644
--- a/composer.json
+++ b/composer.json
@@ -6,6 +6,6 @@
         "simplesamlphp/composer-module-installer": "~1.0"
     },
     "require-dev": {
-        "simplesamlphp/simplesamlphp": "1.17.*"
+        "simplesamlphp/simplesamlphp": "1.18.*"
     }
 }