diff --git a/build.gradle.kts b/build.gradle.kts
index fa1e500..4b31df5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -31,7 +31,7 @@ dependencies {
 
     implementation("io.ktor:ktor-client-logging:$ktorVersion")
     implementation("io.github.microutils:kotlin-logging-jvm:3.0.5")
-    implementation("ch.qos.logback:logback-classic:1.5.20")
+    implementation("ch.qos.logback:logback-classic:1.5.21")
 
     testImplementation("io.kotest:kotest-runner-junit5:$kotestVersion")
     testImplementation("io.kotest:kotest-assertions-core:$kotestVersion")