diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 5da0605..6cada75 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,7 +3,7 @@
 # https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
 
 [versions]
-kotlin = "2.3.20"
+kotlin = "2.3.21"
 shadow = "9.4.1"
 spotless = "8.4.0"
 paperweight = "2.0.0-beta.19"