diff --git a/.github/workflows/bld.yml b/.github/workflows/bld.yml
index 9ef2fea..4185541 100644
--- a/.github/workflows/bld.yml
+++ b/.github/workflows/bld.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         java-version: [17, 21, 22]
-        kotlin-version: [1.9.24, 2.0.20]
+        kotlin-version: [1.9.25, 2.1.10]
 
     steps:
       - name: Checkout source repository
diff --git a/README.md b/README.md
index 864d72b..309209f 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 [![License (3-Clause BSD)](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](https://opensource.org/licenses/BSD-3-Clause)
-[![Kotlin](https://img.shields.io/badge/kotlin-2.0.20-7f52ff)](https://kotlinlang.org/)
+[![Kotlin](https://img.shields.io/badge/kotlin-2.1.10-7f52ff)](https://kotlinlang.org/)
 [![bld](https://img.shields.io/badge/2.2.1-FA9052?label=bld&labelColor=2392FF)](https://rife2.com/bld)
 [![Release](https://img.shields.io/github/release/ethauvin/akismet-kotlin.svg)](https://github.com/ethauvin/akismet-kotlin/releases/latest)
 [![Nexus Snapshot](https://img.shields.io/nexus/s/net.thauvin.erik/akismet-kotlin?label=snapshot&server=https%3A%2F%2Foss.sonatype.org%2F)](https://oss.sonatype.org/content/repositories/snapshots/net/thauvin/erik/akismet-kotlin/)
diff --git a/examples/gradle/build.gradle.kts b/examples/gradle/build.gradle.kts
index 5a15155..927fc12 100644
--- a/examples/gradle/build.gradle.kts
+++ b/examples/gradle/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     id("application")
     id("com.github.ben-manes.versions") version "0.51.0"
-    kotlin("jvm") version "2.0.20"
+    kotlin("jvm") version "2.1.10"
 }
 
 defaultTasks(ApplicationPlugin.TASK_RUN_NAME)
diff --git a/src/bld/java/net/thauvin/erik/AkismetBuild.java b/src/bld/java/net/thauvin/erik/AkismetBuild.java
index bde820f..65fd718 100644
--- a/src/bld/java/net/thauvin/erik/AkismetBuild.java
+++ b/src/bld/java/net/thauvin/erik/AkismetBuild.java
@@ -71,14 +71,14 @@ public class AkismetBuild extends Project {
         repositories = List.of(MAVEN_LOCAL, MAVEN_CENTRAL);
 
         var okHttp = version(4, 12, 0);
-        final var kotlin = version(2, 0, 20);
+        final var kotlin = version(2, 1, 10);
         scope(compile)
                 .include(dependency("org.jetbrains.kotlin", "kotlin-stdlib", kotlin))
                 .include(dependency("org.jetbrains.kotlin", "kotlin-stdlib-jdk7", kotlin))
                 .include(dependency("org.jetbrains.kotlin", "kotlin-stdlib-jdk8", kotlin))
                 .include(dependency("com.squareup.okhttp3", "okhttp", okHttp))
                 .include(dependency("com.squareup.okhttp3", "logging-interceptor", okHttp))
-                .include(dependency("org.jetbrains.kotlinx", "kotlinx-serialization-json", version(1, 7, 3)));
+                .include(dependency("org.jetbrains.kotlinx", "kotlinx-serialization-json", version(1, 8, 0)));
         scope(provided)
                 .include(dependency("jakarta.servlet", "jakarta.servlet-api", version(6, 1, 0)));
         scope(test)