diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index a094025b2..a02cb3d26 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -59,7 +59,7 @@ dependencies {
 
   testFixturesApi("dev.forst:ktor-api-key:2.2.4")
 
-  testFixturesApi("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
+  testFixturesApi("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
 }
 
 testing {
diff --git a/json-schema/build.gradle.kts b/json-schema/build.gradle.kts
index b802e0193..2f48544d9 100644
--- a/json-schema/build.gradle.kts
+++ b/json-schema/build.gradle.kts
@@ -24,7 +24,7 @@ dependencies {
   api(projects.kompendiumEnrichment)
 
   implementation("org.jetbrains.kotlin:kotlin-reflect:1.8.21")
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
 
   // Formatting
   detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")
diff --git a/oas/build.gradle.kts b/oas/build.gradle.kts
index 0476c6696..7ed477758 100644
--- a/oas/build.gradle.kts
+++ b/oas/build.gradle.kts
@@ -22,7 +22,7 @@ dependencies {
 
   api(projects.kompendiumJsonSchema)
   api(projects.kompendiumEnrichment)
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
 
   // Formatting
   detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")
diff --git a/playground/build.gradle.kts b/playground/build.gradle.kts
index dc7c5a6cc..55d26e567 100644
--- a/playground/build.gradle.kts
+++ b/playground/build.gradle.kts
@@ -41,7 +41,7 @@ dependencies {
   implementation("org.slf4j:slf4j-simple:2.0.7")
 
 
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
   implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.0")
 
   implementation("joda-time:joda-time:2.12.5")
diff --git a/protobuf-java-converter/build.gradle.kts b/protobuf-java-converter/build.gradle.kts
index 512d1956b..fdf5e1a27 100644
--- a/protobuf-java-converter/build.gradle.kts
+++ b/protobuf-java-converter/build.gradle.kts
@@ -24,7 +24,7 @@ dependencies {
   implementation(projects.kompendiumJsonSchema)
   implementation("com.google.protobuf:protobuf-java:3.23.0")
   implementation("org.jetbrains.kotlin:kotlin-reflect:1.8.21")
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
 
   // Formatting
   detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")