diff --git a/apps/catalog/android/build.gradle b/apps/catalog/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/apps/catalog/android/build.gradle
+++ b/apps/catalog/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
diff --git a/apps/frontend/android/build.gradle b/apps/frontend/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/apps/frontend/android/build.gradle
+++ b/apps/frontend/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
diff --git a/packages/feature/auth/example/android/build.gradle b/packages/feature/auth/example/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/packages/feature/auth/example/android/build.gradle
+++ b/packages/feature/auth/example/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
diff --git a/packages/feature/schedule/example/android/build.gradle b/packages/feature/schedule/example/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/packages/feature/schedule/example/android/build.gradle
+++ b/packages/feature/schedule/example/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
diff --git a/packages/feature/settings/example/android/build.gradle b/packages/feature/settings/example/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/packages/feature/settings/example/android/build.gradle
+++ b/packages/feature/settings/example/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
diff --git a/packages/feature/top/example/android/build.gradle b/packages/feature/top/example/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/packages/feature/top/example/android/build.gradle
+++ b/packages/feature/top/example/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
diff --git a/tools/template/example/android/build.gradle b/tools/template/example/android/build.gradle
index ec3244ca..467fe9e0 100644
--- a/tools/template/example/android/build.gradle
+++ b/tools/template/example/android/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.20'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()