diff --git a/languages/kotlin/kotlin-codegen-reference/build.gradle.kts b/languages/kotlin/kotlin-codegen-reference/build.gradle.kts
index 6833e5c3..4a18cf9c 100644
--- a/languages/kotlin/kotlin-codegen-reference/build.gradle.kts
+++ b/languages/kotlin/kotlin-codegen-reference/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
-    kotlin("jvm") version "1.9.0"
-    kotlin("plugin.serialization") version "1.9.0"
+    kotlin("jvm") version "2.0.20"
+    kotlin("plugin.serialization") version "2.0.20"
     application
 }
 
@@ -22,7 +22,7 @@ dependencies {
     implementation("io.ktor:ktor-client-core:$ktorVersion")
     implementation("io.ktor:ktor-client-cio:$ktorVersion")
     implementation("io.ktor:ktor-client-websockets:$ktorVersion")
-    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 }
 
 tasks.test {
diff --git a/languages/kotlin/kotlin-codegen-reference/gradle.properties b/languages/kotlin/kotlin-codegen-reference/gradle.properties
index 9cccc647..810853f0 100644
--- a/languages/kotlin/kotlin-codegen-reference/gradle.properties
+++ b/languages/kotlin/kotlin-codegen-reference/gradle.properties
@@ -1,2 +1,2 @@
 kotlin.code.style=official
-ktorVersion=2.3.4
\ No newline at end of file
+ktorVersion=3.0.1
\ No newline at end of file
diff --git a/tests/clients/kotlin/.idea/kotlinc.xml b/tests/clients/kotlin/.idea/kotlinc.xml
index 521a7227..e541a9e0 100644
--- a/tests/clients/kotlin/.idea/kotlinc.xml
+++ b/tests/clients/kotlin/.idea/kotlinc.xml
@@ -4,6 +4,6 @@
     <option name="jvmTarget" value="21" />
   </component>
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.9.22" />
+    <option name="version" value="2.0.20" />
   </component>
 </project>
\ No newline at end of file
diff --git a/tests/clients/kotlin/build.gradle.kts b/tests/clients/kotlin/build.gradle.kts
index b7933bec..5fe697db 100644
--- a/tests/clients/kotlin/build.gradle.kts
+++ b/tests/clients/kotlin/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
-    kotlin("jvm") version "1.9.22"
-    kotlin("plugin.serialization") version "1.9.22"
+    kotlin("jvm") version "2.0.20"
+    kotlin("plugin.serialization") version "2.0.20"
     application
 }
 
@@ -19,10 +19,10 @@ repositories {
 
 dependencies {
     testImplementation("org.jetbrains.kotlin:kotlin-test")
-    testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.8.0-RC2")
+    testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.9.0")
     implementation("io.ktor:ktor-client-core:$ktorVersion")
     implementation("io.ktor:ktor-client-cio:$ktorVersion")
-    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 }
 
 tasks.test {
diff --git a/tests/clients/kotlin/gradle.properties b/tests/clients/kotlin/gradle.properties
index 9cccc647..810853f0 100644
--- a/tests/clients/kotlin/gradle.properties
+++ b/tests/clients/kotlin/gradle.properties
@@ -1,2 +1,2 @@
 kotlin.code.style=official
-ktorVersion=2.3.4
\ No newline at end of file
+ktorVersion=3.0.1
\ No newline at end of file