diff --git a/.github/workflows/samples-kotlin-server-jdk17.yaml b/.github/workflows/samples-kotlin-server-jdk17.yaml
index 5b1fda8d6daa..b461b2cf8a69 100644
--- a/.github/workflows/samples-kotlin-server-jdk17.yaml
+++ b/.github/workflows/samples-kotlin-server-jdk17.yaml
@@ -27,7 +27,7 @@ on:
       # - samples/server/petstore/kotlin-spring-default/**
 
 env:
-  GRADLE_VERSION: '8.10'
+  GRADLE_VERSION: '8.11'
 
 jobs:
   build:
@@ -54,6 +54,7 @@ jobs:
           - samples/server/petstore/kotlin-server/javalin-6
           - samples/server/petstore/kotlin-server/ktor
           - samples/server/petstore/kotlin-server/ktor2
+          - samples/server/petstore/kotlin-server-modelMutable
           - samples/server/petstore/kotlin-misk
           - samples/server/petstore/kotlin-spring-declarative-interface
           - samples/server/petstore/kotlin-spring-declarative-interface-reactive-coroutines
diff --git a/.github/workflows/samples-kotlin-server-jdk21.yaml b/.github/workflows/samples-kotlin-server-jdk21.yaml
index 8d70d007e658..43e96e60f9af 100644
--- a/.github/workflows/samples-kotlin-server-jdk21.yaml
+++ b/.github/workflows/samples-kotlin-server-jdk21.yaml
@@ -13,7 +13,7 @@ on:
       - 'samples/server/petstore/kotlin-server-required-and-nullable-properties/**'
 
 env:
-  GRADLE_VERSION: '8.10'
+  GRADLE_VERSION: '8.11'
 
 jobs:
   build:
diff --git a/.github/workflows/samples-kotlin-server.yaml b/.github/workflows/samples-kotlin-server.yaml
index 509f087e2856..aa5349199a92 100644
--- a/.github/workflows/samples-kotlin-server.yaml
+++ b/.github/workflows/samples-kotlin-server.yaml
@@ -42,11 +42,9 @@ jobs:
           - samples/server/petstore/kotlin-springboot-springfox
           - samples/server/petstore/kotlin-springboot-x-kotlin-implements
           - samples/server/petstore/kotlin-springboot-include-http-request-context-delegate
-          - samples/server/petstore/kotlin-server/ktor
           - samples/server/petstore/kotlin-server/ktor2
           - samples/server/petstore/kotlin-server/jaxrs-spec
           - samples/server/petstore/kotlin-server/jaxrs-spec-mutiny
-          - samples/server/petstore/kotlin-server-modelMutable
           - samples/server/petstore/kotlin-server/javalin
           - samples/server/others/kotlin-server/jaxrs-spec
           - samples/server/others/kotlin-server/jaxrs-spec-array-response
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/build.gradle.kts.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/build.gradle.kts.mustache
index 1fa61c071eaf..44a4475669e4 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/build.gradle.kts.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/build.gradle.kts.mustache
@@ -6,13 +6,13 @@ group = "{{groupId}}"
 version = "{{artifactVersion}}"
 
 plugins {
-    kotlin("jvm") version "2.0.20"
-    application
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("jvm") version "2.3.0"
+    id("io.ktor.plugin") version "3.4.0"
+    kotlin("plugin.serialization") version "2.3.0"
 }
 
 application {
-    mainClass.set("io.ktor.server.netty.EngineMain")
+    mainClass = "io.ktor.server.netty.EngineMain"
 
     val isDevelopment: Boolean = project.ext.has("development")
     applicationDefaultJvmArgs = listOf("-Dio.ktor.development=$isDevelopment")
@@ -23,7 +23,6 @@ repositories {
 }
 
 dependencies {
-    implementation(platform("io.ktor:ktor-bom:3.0.2"))
     implementation("ch.qos.logback:logback-classic:$logback_version")
 {{#hasAuthMethods}}
     implementation("com.typesafe:config:1.4.1")
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/gradle.properties b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/gradle.properties
index 36dd5c928837..46c974d67a63 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/gradle.properties
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/gradle.properties
@@ -1,4 +1,4 @@
 kotlin.code.style=official
-ktor_version=3.0.2
-kotlin_version=2.0.20
+ktor_version=3.4.0
+kotlin_version=2.3.0
 logback_version=1.5.19
diff --git a/samples/server/petstore/kotlin-server-modelMutable/build.gradle.kts b/samples/server/petstore/kotlin-server-modelMutable/build.gradle.kts
index 1e91d49feaf6..2cd09d7a899b 100644
--- a/samples/server/petstore/kotlin-server-modelMutable/build.gradle.kts
+++ b/samples/server/petstore/kotlin-server-modelMutable/build.gradle.kts
@@ -6,13 +6,13 @@ group = "org.openapitools"
 version = "1.0.0"
 
 plugins {
-    kotlin("jvm") version "2.0.20"
-    application
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("jvm") version "2.3.0"
+    id("io.ktor.plugin") version "3.4.0"
+    kotlin("plugin.serialization") version "2.3.0"
 }
 
 application {
-    mainClass.set("io.ktor.server.netty.EngineMain")
+    mainClass = "io.ktor.server.netty.EngineMain"
 
     val isDevelopment: Boolean = project.ext.has("development")
     applicationDefaultJvmArgs = listOf("-Dio.ktor.development=$isDevelopment")
@@ -23,7 +23,6 @@ repositories {
 }
 
 dependencies {
-    implementation(platform("io.ktor:ktor-bom:3.0.2"))
     implementation("ch.qos.logback:logback-classic:$logback_version")
     implementation("com.typesafe:config:1.4.1")
     implementation("io.ktor:ktor-server-auth")
diff --git a/samples/server/petstore/kotlin-server-modelMutable/gradle.properties b/samples/server/petstore/kotlin-server-modelMutable/gradle.properties
index 36dd5c928837..46c974d67a63 100644
--- a/samples/server/petstore/kotlin-server-modelMutable/gradle.properties
+++ b/samples/server/petstore/kotlin-server-modelMutable/gradle.properties
@@ -1,4 +1,4 @@
 kotlin.code.style=official
-ktor_version=3.0.2
-kotlin_version=2.0.20
+ktor_version=3.4.0
+kotlin_version=2.3.0
 logback_version=1.5.19
diff --git a/samples/server/petstore/kotlin-server/ktor/build.gradle.kts b/samples/server/petstore/kotlin-server/ktor/build.gradle.kts
index 1e91d49feaf6..2cd09d7a899b 100644
--- a/samples/server/petstore/kotlin-server/ktor/build.gradle.kts
+++ b/samples/server/petstore/kotlin-server/ktor/build.gradle.kts
@@ -6,13 +6,13 @@ group = "org.openapitools"
 version = "1.0.0"
 
 plugins {
-    kotlin("jvm") version "2.0.20"
-    application
-    kotlin("plugin.serialization") version "2.0.20"
+    kotlin("jvm") version "2.3.0"
+    id("io.ktor.plugin") version "3.4.0"
+    kotlin("plugin.serialization") version "2.3.0"
 }
 
 application {
-    mainClass.set("io.ktor.server.netty.EngineMain")
+    mainClass = "io.ktor.server.netty.EngineMain"
 
     val isDevelopment: Boolean = project.ext.has("development")
     applicationDefaultJvmArgs = listOf("-Dio.ktor.development=$isDevelopment")
@@ -23,7 +23,6 @@ repositories {
 }
 
 dependencies {
-    implementation(platform("io.ktor:ktor-bom:3.0.2"))
     implementation("ch.qos.logback:logback-classic:$logback_version")
     implementation("com.typesafe:config:1.4.1")
     implementation("io.ktor:ktor-server-auth")
diff --git a/samples/server/petstore/kotlin-server/ktor/gradle.properties b/samples/server/petstore/kotlin-server/ktor/gradle.properties
index 36dd5c928837..46c974d67a63 100644
--- a/samples/server/petstore/kotlin-server/ktor/gradle.properties
+++ b/samples/server/petstore/kotlin-server/ktor/gradle.properties
@@ -1,4 +1,4 @@
 kotlin.code.style=official
-ktor_version=3.0.2
-kotlin_version=2.0.20
+ktor_version=3.4.0
+kotlin_version=2.3.0
 logback_version=1.5.19