diff --git a/build.gradle.kts b/build.gradle.kts
index 343d9db..348b5c3 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -32,7 +32,7 @@ dependencies {
     kapt("org.seasar.doma:doma-processor:$domaVersion")
     implementation("org.seasar.doma:doma-kotlin:$domaVersion")
     implementation("org.seasar.doma:doma-slf4j:$domaVersion")
-    runtimeOnly("ch.qos.logback:logback-classic:1.5.8")
+    runtimeOnly("ch.qos.logback:logback-classic:1.5.9")
     runtimeOnly("com.h2database:h2:1.4.200")
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.11.2")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.11.2")