diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 96158f0..5f9c057 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-input-engine = "2.1.0"
+input-engine = "2.1.1"
 activityKtx = "1.10.1"
 agp = "8.11.1"
 androidx-activity = "1.10.1"
diff --git a/input-engine/src/commonMain/kotlin/de/tillhub/inputengine/domain/StringParam.kt b/input-engine/src/commonMain/kotlin/de/tillhub/inputengine/domain/StringParam.kt
index cb1ff6f..1b7bb07 100644
--- a/input-engine/src/commonMain/kotlin/de/tillhub/inputengine/domain/StringParam.kt
+++ b/input-engine/src/commonMain/kotlin/de/tillhub/inputengine/domain/StringParam.kt
@@ -4,9 +4,11 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 sealed class StringParam {
+    @Serializable
     data class Enable(
         val value: String,
     ) : StringParam()
 
+    @Serializable
     data object Disable : StringParam()
 }