diff --git a/.docker/docker-compose.yml b/.docker/docker-compose.yml
index d2a6afdbcd9c725107b98e85dd64fad8719594eb..eaed2870febd4785420dcd7f25a81fb1680a67f4 100644
--- a/.docker/docker-compose.yml
+++ b/.docker/docker-compose.yml
@@ -1,7 +1,7 @@
 version: '3.7'
 services:
   sqldb:
-    image: mariadb:10.11
+    image: mariadb:11.4
     environment:
       MYSQL_ROOT_PASSWORD: caosdb1234
     networks:
diff --git a/tests/test_issues_server.py b/tests/test_issues_server.py
index d0adc315379e0be1775d262bfa4f54e747c60654..1e2e6f81de7c34ccd54d0d81844f02bc2790c889 100644
--- a/tests/test_issues_server.py
+++ b/tests/test_issues_server.py
@@ -1555,7 +1555,6 @@ def test_263():
     assert exc.errors[0].msg == "Entity does not exist."  # TODO Or whatever the message shall be.
 
 
-@pytest.mark.xfail(reason="https://gitlab.com/linkahead/linkahead-server/-/issues/264")
 def test_264_accents_and_umlauts():
     """Test whether queries respect accents and
     umlauts. https://gitlab.com/linkahead/linkahead-server/-/issues/264.