diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index ec59f463..b17f7033 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -4,7 +4,7 @@ gradle-api = "8.11.1"
 junit-jupiter = "5.11.4"
 kctfork = "0.14.0"
 kotest = "6.2.5"
-kotlin = "2.4.20"
+kotlin = "2.4.21"
 kotlinx-serialization = "1.11.0"
 lombok = "1.18.48"
 maven-plugin-annotations = "3.16.0"
diff --git a/scip-kotlinc/build.gradle.kts b/scip-kotlinc/build.gradle.kts
index 22a12d17..0a10173c 100644
--- a/scip-kotlinc/build.gradle.kts
+++ b/scip-kotlinc/build.gradle.kts
@@ -32,7 +32,7 @@ tasks.named<Test>("test") {
 // The plugin runs inside the indexed project's compiler, which can predate our build compiler.
 val kotlin240TestRuntime = configurations.create("kotlin240TestRuntime") {
     extendsFrom(configurations.testRuntimeClasspath.get())
-    resolutionStrategy.force("org.jetbrains.kotlin:kotlin-compiler-embeddable:2.4.20")
+    resolutionStrategy.force("org.jetbrains.kotlin:kotlin-compiler-embeddable:2.4.21")
 }
 
 tasks.register<Test>("testKotlin240") {