diff --git a/composer.json b/composer.json
index f4193e8..be22c6b 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
         "simplesamlphp/assert": "^1.0.4",
         "simplesamlphp/composer-module-installer": "^1.3.2",
         "simplesamlphp/saml2": "^5.0.0-alpha.8",
-        "simplesamlphp/simplesamlphp": "dev-master"
+        "simplesamlphp/simplesamlphp": "^3@dev"
     },
     "require-dev": {
         "simplesamlphp/simplesamlphp-test-framework": "^1.5.5"