diff --git a/composer.json b/composer.json
index 9382d17b..52a0f1eb 100644
--- a/composer.json
+++ b/composer.json
@@ -65,7 +65,8 @@
         "scheb/2fa-trusted-device": "^6.0"
     },
     "conflict": {
-        "scheb/two-factor-bundle": "*"
+        "scheb/two-factor-bundle": "*",
+        "symfony/security-core": "^7"
     },
     "config": {
         "allow-plugins": {
diff --git a/src/bundle/composer.json b/src/bundle/composer.json
index 56e192d9..b969e898 100644
--- a/src/bundle/composer.json
+++ b/src/bundle/composer.json
@@ -37,6 +37,7 @@
         "scheb/2fa-trusted-device": "Trusted devices support"
     },
     "conflict": {
-        "scheb/two-factor-bundle": "*"
+        "scheb/two-factor-bundle": "*",
+        "symfony/security-core": "^7"
     }
 }