diff --git a/libs.versions.toml b/libs.versions.toml
index d48224d..351151b 100644
--- a/libs.versions.toml
+++ b/libs.versions.toml
@@ -7,7 +7,7 @@ kotlinxSerialization = "1.6.21"
 dokka = "1.6.10"
 kotlinxSerializationJson = "1.3.3"
 ktor = "1.6.8"
-logbackClassic = "1.2.11"
+logbackClassic = "1.5.9"
 spring = "2.6.6"
 reactorKotlinExtensions = "1.1.6"
 undertow = "2.2.17.Final"