diff --git a/CHANGELOG.md b/CHANGELOG.md
index 61991c4..54d4417 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Bug fixes
 
 ### Dependencies
+- Update kotlinx-serialization-json dependency from 1.7.2 to 1.7.3 ([#243](https://github.com/personio/datadog-synthetic-test-support/pull/243))
 - Update secretsmanager dependency from 2.27.17 to 2.28.12 ([#241](https://github.com/personio/datadog-synthetic-test-support/pull/241))
 
 ## [2.6.0] - 2024-09-09
diff --git a/build.gradle.kts b/build.gradle.kts
index f83abbc..67c0b71 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -41,7 +41,7 @@ dependencies {
     implementation("com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:$jacksonVersion")
     implementation("org.apache.commons:commons-text:1.12.0")
     api("software.amazon.awssdk:secretsmanager:$awsSdkVersion")
-    api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.2")
+    api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
     api("javax.activation:activation:1.1.1")
     api("com.datadoghq:datadog-api-client:2.27.0")
     testRuntimeOnly("software.amazon.awssdk:sso:$awsSdkVersion")