diff --git a/composer.json b/composer.json
index 902bd9a..82e17b8 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require-dev": {
         "ext-intl": "*",
 
-        "simplesamlphp/simplesamlphp-test-framework": "~1.8.0"
+        "simplesamlphp/simplesamlphp-test-framework": "~1.9.1"
     },
     "autoload": {
         "psr-4": {