diff --git a/backend/build.gradle b/backend/build.gradle
index 83ee08bf..3b67694d 100644
--- a/backend/build.gradle
+++ b/backend/build.gradle
@@ -20,7 +20,7 @@ spotless {
 
 ext {
     javaUuidGeneratorVersion = "5.2.0"
-    logstashVersion = "8.1"
+    logstashVersion = "9.0"
     caffeineVersion = "3.2.3"
     mockServerVersion = "5.15.0"
     archUnitVersion = "1.4.1"