diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 0761269..fc49d18 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
 kotlinVersion = "2.2.20"
-junitVersion = "5.14.0"
+junitVersion = "6.0.0"
 
 [libraries]
 # Plugins that are used in buildLogic
diff --git a/release-plugin/src/test/kotlin/io/github/simonhauck/release/testdriver/DockerAvailableCondition.kt b/release-plugin/src/test/kotlin/io/github/simonhauck/release/testdriver/DockerAvailableCondition.kt
index 4b6c7f7..6a47ff7 100644
--- a/release-plugin/src/test/kotlin/io/github/simonhauck/release/testdriver/DockerAvailableCondition.kt
+++ b/release-plugin/src/test/kotlin/io/github/simonhauck/release/testdriver/DockerAvailableCondition.kt
@@ -8,7 +8,7 @@ import org.testcontainers.DockerClientFactory
 
 class DockerAvailableCondition : ExecutionCondition {
 
-    override fun evaluateExecutionCondition(context: ExtensionContext?): ConditionEvaluationResult {
+    override fun evaluateExecutionCondition(context: ExtensionContext): ConditionEvaluationResult {
         return if (DockerClientFactory.instance().isDockerAvailable) {
             ConditionEvaluationResult.enabled("Docker is available")
         } else {