diff --git a/build.gradle b/build.gradle
index 708c1d50c..fe46a98e5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     ext.coroutines_version = '1.11.0'
     ext.gradle_version = '8.3.2'
 
diff --git a/kits/adjust/adjust-5/build.gradle b/kits/adjust/adjust-5/build.gradle
index b00744eee..1468bcc86 100644
--- a/kits/adjust/adjust-5/build.gradle
+++ b/kits/adjust/adjust-5/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/adobe/adobe/build.gradle b/kits/adobe/adobe/build.gradle
index 0381f56d6..eb25dd735 100644
--- a/kits/adobe/adobe/build.gradle
+++ b/kits/adobe/adobe/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/adobemedia/adobemedia-3/build.gradle b/kits/adobemedia/adobemedia-3/build.gradle
index dd946bb10..e2680daa9 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 = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/appsflyer/appsflyer-6/build.gradle b/kits/appsflyer/appsflyer-6/build.gradle
index 6a85f8624..378ed1492 100644
--- a/kits/appsflyer/appsflyer-6/build.gradle
+++ b/kits/appsflyer/appsflyer-6/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/appsflyer/appsflyer-7/build.gradle b/kits/appsflyer/appsflyer-7/build.gradle
index 55b9ca0a6..2002426a3 100644
--- a/kits/appsflyer/appsflyer-7/build.gradle
+++ b/kits/appsflyer/appsflyer-7/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/apptentive/apptentive-6/build.gradle b/kits/apptentive/apptentive-6/build.gradle
index b96b7ef4c..19d4561db 100644
--- a/kits/apptentive/apptentive-6/build.gradle
+++ b/kits/apptentive/apptentive-6/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/apptimize/apptimize-3/build.gradle b/kits/apptimize/apptimize-3/build.gradle
index fd0460c55..79c58c86c 100644
--- a/kits/apptimize/apptimize-3/build.gradle
+++ b/kits/apptimize/apptimize-3/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/branch/branch-5/build.gradle b/kits/branch/branch-5/build.gradle
index c259bca59..e1783ddf4 100644
--- a/kits/branch/branch-5/build.gradle
+++ b/kits/branch/branch-5/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/braze/braze-38/build.gradle b/kits/braze/braze-38/build.gradle
index 435cfa84e..db9df2ba0 100644
--- a/kits/braze/braze-38/build.gradle
+++ b/kits/braze/braze-38/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/braze/braze-39/build.gradle b/kits/braze/braze-39/build.gradle
index 7706d57a9..8548717e2 100644
--- a/kits/braze/braze-39/build.gradle
+++ b/kits/braze/braze-39/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/braze/braze-40/build.gradle b/kits/braze/braze-40/build.gradle
index 2591e8361..3492bbdc3 100644
--- a/kits/braze/braze-40/build.gradle
+++ b/kits/braze/braze-40/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/braze/braze-41/build.gradle b/kits/braze/braze-41/build.gradle
index 4b6beb81d..1fd62f4cf 100644
--- a/kits/braze/braze-41/build.gradle
+++ b/kits/braze/braze-41/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/braze/braze-43/build.gradle b/kits/braze/braze-43/build.gradle
index 5388cb3ab..5d9653c02 100644
--- a/kits/braze/braze-43/build.gradle
+++ b/kits/braze/braze-43/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.2.20'
+    ext.kotlin_version = '2.2.21'
     if (project.hasProperty('VERSION')) {
         project.version = project.property('VERSION')
     } else if (!project.hasProperty('version') || project.version.equals('unspecified')) {
diff --git a/kits/clevertap/clevertap-7/build.gradle b/kits/clevertap/clevertap-7/build.gradle
index b3871f93a..a642f46aa 100644
--- a/kits/clevertap/clevertap-7/build.gradle
+++ b/kits/clevertap/clevertap-7/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/comscore/comscore-6/build.gradle b/kits/comscore/comscore-6/build.gradle
index fcb025a9c..907f1c5e0 100644
--- a/kits/comscore/comscore-6/build.gradle
+++ b/kits/comscore/comscore-6/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/ga/ga-23/build.gradle b/kits/ga/ga-23/build.gradle
index 88c27ad77..b5b5a111f 100644
--- a/kits/ga/ga-23/build.gradle
+++ b/kits/ga/ga-23/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.2.20'
+    ext.kotlin_version = '2.2.21'
     if (project.hasProperty('VERSION')) {
         project.version = project.property('VERSION')
     } else if (!project.hasProperty('version') || project.version.equals('unspecified')) {
diff --git a/kits/ga4/ga4-23/build.gradle b/kits/ga4/ga4-23/build.gradle
index 58e114334..ac2722e41 100644
--- a/kits/ga4/ga4-23/build.gradle
+++ b/kits/ga4/ga4-23/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.2.20'
+    ext.kotlin_version = '2.2.21'
     if (project.hasProperty('VERSION')) {
         project.version = project.property('VERSION')
     } else if (!project.hasProperty('version') || project.version.equals('unspecified')) {
diff --git a/kits/iterable/iterable-3/build.gradle b/kits/iterable/iterable-3/build.gradle
index b9ff71ff9..895693e7b 100644
--- a/kits/iterable/iterable-3/build.gradle
+++ b/kits/iterable/iterable-3/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified') || project.version.toString().contains('beta')) {
         project.version = '+'
     }
diff --git a/kits/kochava/kochava-5/build.gradle b/kits/kochava/kochava-5/build.gradle
index 43b677e81..118070f44 100644
--- a/kits/kochava/kochava-5/build.gradle
+++ b/kits/kochava/kochava-5/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/leanplum/leanplum-7/build.gradle b/kits/leanplum/leanplum-7/build.gradle
index 4b54fc96e..e24860f49 100644
--- a/kits/leanplum/leanplum-7/build.gradle
+++ b/kits/leanplum/leanplum-7/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/localytics/localytics-6/build.gradle b/kits/localytics/localytics-6/build.gradle
index 6d405164c..caffab2c6 100644
--- a/kits/localytics/localytics-6/build.gradle
+++ b/kits/localytics/localytics-6/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/onetrust/onetrust/build.gradle b/kits/onetrust/onetrust/build.gradle
index 48c3c98c5..e5b63f961 100644
--- a/kits/onetrust/onetrust/build.gradle
+++ b/kits/onetrust/onetrust/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/optimizely/optimizely-3/build.gradle b/kits/optimizely/optimizely-3/build.gradle
index f694ad6f0..e3bb2506d 100644
--- a/kits/optimizely/optimizely-3/build.gradle
+++ b/kits/optimizely/optimizely-3/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/radar/radar-3/build.gradle b/kits/radar/radar-3/build.gradle
index ec8de1935..f17808bf5 100644
--- a/kits/radar/radar-3/build.gradle
+++ b/kits/radar/radar-3/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     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..a9bf85c9b 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 = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/singular/singular-12/build.gradle b/kits/singular/singular-12/build.gradle
index 59a55ba11..cb9330664 100644
--- a/kits/singular/singular-12/build.gradle
+++ b/kits/singular/singular-12/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.1.20'
+    ext.kotlin_version = '2.1.21'
     if (!project.hasProperty('version') || project.version.equals('unspecified')) {
         project.version = '+'
     }
diff --git a/kits/urbanairship/urbanairship-20/build.gradle b/kits/urbanairship/urbanairship-20/build.gradle
index b82718494..7399ead20 100644
--- a/kits/urbanairship/urbanairship-20/build.gradle
+++ b/kits/urbanairship/urbanairship-20/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '2.2.20'
+    ext.kotlin_version = '2.2.21'
     if (project.hasProperty('VERSION')) {
         project.version = project.property('VERSION')
     } else if (!project.hasProperty('version') || project.version.equals('unspecified')) {