diff --git a/skel/etc/logback.xml b/skel/etc/logback.xml
index 2cf730ea7c5..7dd2d5de701 100644
--- a/skel/etc/logback.xml
+++ b/skel/etc/logback.xml
@@ -300,6 +300,12 @@
         <logger>org.apache.zookeeper.server.NIOServerCnxnFactory</logger>
         <level>error</level>
     </threshold>
+    <threshold>
+      <!-- ZK logs transient errors at warning log level, thus confusing dCache admins.
+          See: https://github.com/dCache/dcache/issues/7564 -->
+      <logger>org.apache.zookeeper.ClientCnxn</logger>
+      <level>error</level>
+    </threshold>
     <threshold>
       <logger>liquibase</logger>
       <level>warn</level>