diff --git a/build.gradle b/build.gradle
index 708c1d50c..1490cebb7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.4.21'
     ext.coroutines_version = '1.11.0'
     ext.gradle_version = '8.3.2'
 
diff --git a/kits/adobemedia/adobemedia-3/build.gradle b/kits/adobemedia/adobemedia-3/build.gradle
index dd946bb10..ccf9fb4ae 100644
--- a/kits/adobemedia/adobemedia-3/build.gradle
+++ b/kits/adobemedia/adobemedia-3/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.4.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/rokt/rokt/build.gradle b/kits/rokt/rokt/build.gradle
index 358d632f0..48bb9d70c 100644
--- a/kits/rokt/rokt/build.gradle
+++ b/kits/rokt/rokt/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.4.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }