diff --git a/build.gradle b/build.gradle
index 8ff1c3951..ec203311b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,7 +49,7 @@ ext {
 	junitJupiterVersion = '5.11.4'
 	kotlinCoroutinesVersion = '1.8.1'
 	log4jVersion = '2.24.3'
-	logbackVersion = '1.5.20'
+	logbackVersion = '1.5.21'
 	micrometerDocsVersion = '1.0.4'
 	micrometerVersion = '1.14.13'
 	micrometerTracingVersion = '1.4.12'