diff --git a/build.sbt b/build.sbt
index 4cd02529..9fb4b1fe 100644
--- a/build.sbt
+++ b/build.sbt
@@ -12,7 +12,7 @@ val fs2Version             = "3.12.2"
 val http4sVersion          = "0.23.33"
 val kindProjectorVersion   = "0.13.4"
 val literallyVersion       = "1.1.0"
-val logbackVersion         = "1.5.20"
+val logbackVersion         = "1.5.21"
 val log4catsVersion        = "2.7.1"
 val mssqlDriverVersion     = "13.2.1.jre11"
 val munitVersion           = "1.0.0-M11"