diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f93b23b0..d1d7a902 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -4,7 +4,7 @@ compileSdk = "34"
 minSdk = "21" # was "24" in desktop
 wearMinSdk = "25"
 
-kotlin = "1.9.20" # https://kotlinlang.org/docs/releases.html#release-details
+kotlin = "1.9.21" # https://kotlinlang.org/docs/releases.html#release-details
 agp = "8.1.4" # https://developer.android.com/studio/releases/gradle-plugin
 realm = "1.13.0" # https://github.com/realm/realm-kotlin