diff --git a/build.gradle.kts b/build.gradle.kts
index 9993010..d121f02 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -28,7 +28,7 @@ repositories {
 
 extra["testcontainersVersion"] = "1.20.1"
 extra["fmodelVersion"] = "3.5.1"
-extra["kotlinxSerializationJson"] = "1.7.1"
+extra["kotlinxSerializationJson"] = "1.9.0"
 extra["kotlinxCollectionsImmutable"] = "0.3.7"
 extra["kotlinLogging"] = "3.0.5"
 extra["kotlinxCoroutinesTest"] = "1.8.1"