diff --git a/build.gradle.kts b/build.gradle.kts
index d5c8e20..bfdc832 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -10,7 +10,7 @@ val jaxbVersion = "4.0.5"
 val jaxbApiVersion = "2.3.1"
 val jsoupVersion = "1.18.1"
 val kluentVersion = "1.72"
-val logbackVersion = "1.5.8"
+val logbackVersion = "1.5.9"
 val logstashEncoderVersion = "8.0"
 val openHtmlToPdfVersion = "1.1.22"
 val prometheusVersion = "0.16.0"