diff --git a/kotlin-wot-binding-mqtt/build.gradle.kts b/kotlin-wot-binding-mqtt/build.gradle.kts
index 4404f3b..1d11d7d 100644
--- a/kotlin-wot-binding-mqtt/build.gradle.kts
+++ b/kotlin-wot-binding-mqtt/build.gradle.kts
@@ -4,5 +4,5 @@ dependencies {
     implementation("com.hivemq:hivemq-mqtt-client:1.3.3")
     testImplementation("ch.qos.logback:logback-classic:1.5.12")
     testImplementation("app.cash.turbine:turbine:1.2.0")
-    testImplementation("org.testcontainers:testcontainers:1.20.3")
+    testImplementation("org.testcontainers:testcontainers:1.21.0")
 }