diff --git a/build.gradle.kts b/build.gradle.kts
index 9220dd86..ae802487 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,6 +1,5 @@
 import org.jetbrains.dokka.gradle.DokkaTask
 import org.jetbrains.dokka.gradle.DokkaTaskPartial
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import java.net.URI
 
 buildscript {
@@ -24,6 +23,10 @@ plugins {
     jacoco
 }
 
+kotlin {
+    jvmToolchain(libs.versions.java.get().toInt())
+}
+
 jacoco {
     toolVersion = libs.versions.jacoco.get()
 }
@@ -51,6 +54,8 @@ nexusPublishing {
     }
 }
 
+val kotlinSrcSet = "/src/main/kotlin"
+
 tasks {
     val deleteOutFolderTask by registering(Delete::class) {
         delete("out")
@@ -72,14 +77,6 @@ tasks {
     }
 }
 
-kotlin {
-    jvmToolchain {
-        languageVersion.set(JavaLanguageVersion.of(libs.versions.java.get()))
-    }
-}
-
-val kotlinSrcSet = "/src/main/kotlin"
-
 subprojects.forEach { subProject ->
     if (subProject.name in setOf("kris-core", "kris-io")) {
         apply {
@@ -99,23 +96,8 @@ subprojects.forEach { subProject ->
             }
         }
     }
-    subProject.tasks {
-        val kotlinVersion = libs.versions.kotlin.get()
-        val kotlinApiLangVersion = kotlinVersion.subSequence(0, 3).toString()
-        val jvmTargetVersion = libs.versions.java.get()
-        withType<KotlinCompile>().configureEach {
-            kotlinOptions {
-                apiVersion = kotlinApiLangVersion
-                languageVersion = kotlinApiLangVersion
-                jvmTarget = jvmTargetVersion
-                freeCompilerArgs = freeCompilerArgs + listOf("-opt-in=kotlin.RequiresOptIn")
-            }
-        }
-        withType<JavaCompile>().configureEach {
-            sourceCompatibility = jvmTargetVersion
-            targetCompatibility = jvmTargetVersion
-        }
 
+    subProject.tasks {
         withType<Test> {
             useJUnitPlatform {
                 includeEngines("junit-jupiter", "kotest")
@@ -128,11 +110,6 @@ subprojects.forEach { subProject ->
                 }
             }
         }
-        kotlin {
-            jvmToolchain {
-                languageVersion.set(JavaLanguageVersion.of(libs.versions.java.get()))
-            }
-        }
     }
 }
 
diff --git a/gradle-plugins/publishing/build.gradle.kts b/gradle-plugins/publishing/build.gradle.kts
index ea3561b3..5a2f45c2 100644
--- a/gradle-plugins/publishing/build.gradle.kts
+++ b/gradle-plugins/publishing/build.gradle.kts
@@ -1,5 +1,3 @@
-import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
-
 @Suppress("DSL_SCOPE_VIOLATION")
 plugins {
     `java-gradle-plugin`
@@ -8,9 +6,7 @@ plugins {
 }
 
 kotlin {
-    jvmToolchain {
-        languageVersion.set(JavaLanguageVersion.of(libs.versions.java.get()))
-    }
+    jvmToolchain(libs.versions.java.get().toInt())
 }
 
 dependencies {
diff --git a/gradle-plugins/verification/build.gradle.kts b/gradle-plugins/verification/build.gradle.kts
index 72ebd5e8..8a7cb384 100644
--- a/gradle-plugins/verification/build.gradle.kts
+++ b/gradle-plugins/verification/build.gradle.kts
@@ -13,9 +13,7 @@ dependencies {
 }
 
 kotlin {
-    jvmToolchain {
-        languageVersion.set(JavaLanguageVersion.of(libs.versions.java.get()))
-    }
+    jvmToolchain(libs.versions.java.get().toInt())
 }
 
 detekt {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index e31172ef..5bc4c86d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -11,7 +11,7 @@ java = "17"
 junitJupiter = "5.10.2"
 kluent = "1.73"
 kotest = "5.9.0"
-kotlin = "1.9.24"
+kotlin = "2.0.0"
 # See https://github.com/detekt/detekt/issues/6198
 detektKotlinVersion = "1.9.22"
 mockk = "1.13.11"
diff --git a/subprojects/kris-guide/kris-guide.gradle.kts b/subprojects/kris-guide/kris-guide.gradle.kts
index bc0fd1a0..b0c050d4 100644
--- a/subprojects/kris-guide/kris-guide.gradle.kts
+++ b/subprojects/kris-guide/kris-guide.gradle.kts
@@ -1,18 +1,8 @@
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 plugins {
     `java-library`
     kotlin("jvm")
 }
 
-tasks {
-    withType<KotlinCompile>().configureEach {
-        kotlinOptions {
-            jvmTarget = libs.versions.java.get()
-        }
-    }
-}
-
 dependencies {
     testImplementation(project(":kris-io"))