diff --git a/frameworks/Kotlin/http4k/build.gradle.kts b/frameworks/Kotlin/http4k/build.gradle.kts
index 37e2ce6aca6..b30048cb28c 100644
--- a/frameworks/Kotlin/http4k/build.gradle.kts
+++ b/frameworks/Kotlin/http4k/build.gradle.kts
@@ -1,10 +1,11 @@
 import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
-import org.gradle.api.JavaVersion.*
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-import org.jetbrains.kotlin.js.translate.context.Namer.kotlin
+import org.gradle.api.JavaVersion.VERSION_21
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21
+import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 
 plugins {
-    kotlin("jvm") version "1.9.23"
+    kotlin("jvm") version "2.1.10"
     application
 }
 
@@ -40,10 +41,9 @@ allprojects {
     }
 
     tasks {
-        withType<KotlinCompile> {
-            kotlinOptions {
-                jvmTarget = "21"
-                allWarningsAsErrors = true
+        withType<KotlinJvmCompile>().configureEach {
+            compilerOptions {
+                jvmTarget.set(JVM_21)
             }
         }
 
diff --git a/frameworks/Kotlin/http4k/core/build.gradle.kts b/frameworks/Kotlin/http4k/core/build.gradle.kts
index 9cd7e8f5269..baee2c95166 100644
--- a/frameworks/Kotlin/http4k/core/build.gradle.kts
+++ b/frameworks/Kotlin/http4k/core/build.gradle.kts
@@ -4,9 +4,8 @@ plugins {
 }
 
 dependencies {
-    api(platform("org.http4k:http4k-bom:5.14.4.0"))
-    api("org.jetbrains.kotlin:kotlin-stdlib:1.9.23")
-    api("org.jetbrains.kotlin:kotlin-reflect:1.9.23")
+    api(platform("org.http4k:http4k-bom:6.1.0.1"))
+    api("org.jetbrains.kotlin:kotlin-reflect:2.1.10")
     api("org.http4k:http4k-core")
     api("org.http4k:http4k-format-argo")
     api("org.http4k:http4k-template-rocker")
diff --git a/frameworks/Kotlin/http4k/gradle/wrapper/gradle-wrapper.properties b/frameworks/Kotlin/http4k/gradle/wrapper/gradle-wrapper.properties
index b82aa23a4f0..37f853b1c84 100644
--- a/frameworks/Kotlin/http4k/gradle/wrapper/gradle-wrapper.properties
+++ b/frameworks/Kotlin/http4k/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/frameworks/Kotlin/http4k/http4k-apache-graalvm.dockerfile b/frameworks/Kotlin/http4k/http4k-apache-graalvm.dockerfile
index 51132613c98..d1f1ecfe540 100644
--- a/frameworks/Kotlin/http4k/http4k-apache-graalvm.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-apache-graalvm.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21 as gradle
+FROM gradle:8.13.0-jdk21 as gradle
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-apache.dockerfile b/frameworks/Kotlin/http4k/http4k-apache.dockerfile
index de62168324d..6db064aa004 100644
--- a/frameworks/Kotlin/http4k/http4k-apache.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-apache.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-apache4.dockerfile b/frameworks/Kotlin/http4k/http4k-apache4.dockerfile
index 840bc34ca4a..8d72e06a922 100644
--- a/frameworks/Kotlin/http4k/http4k-apache4.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-apache4.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-graalvm.dockerfile b/frameworks/Kotlin/http4k/http4k-graalvm.dockerfile
index e2688ac80a4..96c358e3f4e 100644
--- a/frameworks/Kotlin/http4k/http4k-graalvm.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-graalvm.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21 as gradle
+FROM gradle:8.13.0-jdk21 as gradle
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-helidon-graalvm.dockerfile b/frameworks/Kotlin/http4k/http4k-helidon-graalvm.dockerfile
index 650f8dfc528..89cd5cbf5e7 100644
--- a/frameworks/Kotlin/http4k/http4k-helidon-graalvm.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-helidon-graalvm.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21 as gradle
+FROM gradle:8.13.0-jdk21 as gradle
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-helidon-jdbc.dockerfile b/frameworks/Kotlin/http4k/http4k-helidon-jdbc.dockerfile
index f8a49b8b7dd..a5097ffcb50 100644
--- a/frameworks/Kotlin/http4k/http4k-helidon-jdbc.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-helidon-jdbc.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-helidon-pgclient.dockerfile b/frameworks/Kotlin/http4k/http4k-helidon-pgclient.dockerfile
index 7e36fa04a8b..44baf3d123d 100644
--- a/frameworks/Kotlin/http4k/http4k-helidon-pgclient.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-helidon-pgclient.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-jetty.dockerfile b/frameworks/Kotlin/http4k/http4k-jetty.dockerfile
index 674a7f34bba..03b4d90a470 100644
--- a/frameworks/Kotlin/http4k/http4k-jetty.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-jetty.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-jetty11.dockerfile b/frameworks/Kotlin/http4k/http4k-jetty11.dockerfile
index d9c785409f0..d3a82a61108 100644
--- a/frameworks/Kotlin/http4k/http4k-jetty11.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-jetty11.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-jetty11loom-jdbc.dockerfile b/frameworks/Kotlin/http4k/http4k-jetty11loom-jdbc.dockerfile
index d085a9b1913..f1a05191210 100644
--- a/frameworks/Kotlin/http4k/http4k-jetty11loom-jdbc.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-jetty11loom-jdbc.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-jetty11loom-pgclient.dockerfile b/frameworks/Kotlin/http4k/http4k-jetty11loom-pgclient.dockerfile
index d2cd8bc3c65..471cba3f62b 100644
--- a/frameworks/Kotlin/http4k/http4k-jetty11loom-pgclient.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-jetty11loom-pgclient.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-jettyloom-jdbc.dockerfile b/frameworks/Kotlin/http4k/http4k-jettyloom-jdbc.dockerfile
index a3837e51fa6..baed4395a7d 100644
--- a/frameworks/Kotlin/http4k/http4k-jettyloom-jdbc.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-jettyloom-jdbc.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-jettyloom-pgclient.dockerfile b/frameworks/Kotlin/http4k/http4k-jettyloom-pgclient.dockerfile
index 7259d27378a..f84e65c1c87 100644
--- a/frameworks/Kotlin/http4k/http4k-jettyloom-pgclient.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-jettyloom-pgclient.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-ktorcio.dockerfile b/frameworks/Kotlin/http4k/http4k-ktorcio.dockerfile
index ff2a0ed08b5..db7a10c4de9 100644
--- a/frameworks/Kotlin/http4k/http4k-ktorcio.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-ktorcio.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-ktornetty.dockerfile b/frameworks/Kotlin/http4k/http4k-ktornetty.dockerfile
index ed9db5cdae8..4032da5a693 100644
--- a/frameworks/Kotlin/http4k/http4k-ktornetty.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-ktornetty.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-netty.dockerfile b/frameworks/Kotlin/http4k/http4k-netty.dockerfile
index 37dea590804..76dd76e073e 100644
--- a/frameworks/Kotlin/http4k/http4k-netty.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-netty.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-ratpack.dockerfile b/frameworks/Kotlin/http4k/http4k-ratpack.dockerfile
index 6e496eb8501..c271b258af8 100644
--- a/frameworks/Kotlin/http4k/http4k-ratpack.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-ratpack.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-sunhttploom.dockerfile b/frameworks/Kotlin/http4k/http4k-sunhttploom.dockerfile
index 3fa136cb9fc..92dd9b39b3d 100644
--- a/frameworks/Kotlin/http4k/http4k-sunhttploom.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-sunhttploom.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k-undertow.dockerfile b/frameworks/Kotlin/http4k/http4k-undertow.dockerfile
index 3f0ab95fc50..10b7c29710c 100644
--- a/frameworks/Kotlin/http4k/http4k-undertow.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k-undertow.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts
diff --git a/frameworks/Kotlin/http4k/http4k.dockerfile b/frameworks/Kotlin/http4k/http4k.dockerfile
index ec643dda001..19f3f4eccf2 100644
--- a/frameworks/Kotlin/http4k/http4k.dockerfile
+++ b/frameworks/Kotlin/http4k/http4k.dockerfile
@@ -1,4 +1,4 @@
-FROM gradle:8.7.0-jdk21
+FROM gradle:8.13.0-jdk21
 USER root
 WORKDIR /http4k
 COPY build.gradle.kts build.gradle.kts