diff --git a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java
index e35bbdf5..5d170162 100644
--- a/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java
+++ b/src/main/java/ch/ethz/seb/sebserver/webservice/servicelayer/session/impl/indicator/DistributedPingCache.java
@@ -180,7 +180,7 @@ public class DistributedPingCache implements DisposableBean {
         }
     }
 
-    @Transactional
+    @Transactional(readOnly = true)
     public void updateCache() {
 
         if (this.pingCache.isEmpty()) {