diff --git a/clients/algoliasearch-client-kotlin/gradle/libs.versions.toml b/clients/algoliasearch-client-kotlin/gradle/libs.versions.toml
index c83040ecd2..4e4e2d723f 100644
--- a/clients/algoliasearch-client-kotlin/gradle/libs.versions.toml
+++ b/clients/algoliasearch-client-kotlin/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.1.20"
+kotlin = "2.1.21"
 ktor = "3.1.3"
 
 [libraries]
diff --git a/playground/kotlin/build.gradle.kts b/playground/kotlin/build.gradle.kts
index 01e21b49a6..53f2366c84 100644
--- a/playground/kotlin/build.gradle.kts
+++ b/playground/kotlin/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
-    kotlin("jvm") version "2.1.20"
-    kotlin("plugin.serialization") version "2.1.20"
+    kotlin("jvm") version "2.1.21"
+    kotlin("plugin.serialization") version "2.1.21"
     id("application")
 }
 
diff --git a/tests/output/kotlin/gradle/libs.versions.toml b/tests/output/kotlin/gradle/libs.versions.toml
index 3cce8d58d1..113acee62b 100644
--- a/tests/output/kotlin/gradle/libs.versions.toml
+++ b/tests/output/kotlin/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.1.20"
+kotlin = "2.1.21"
 coroutines = "1.10.2"
 serialization = "1.5.0"
 ktor = "3.1.3"