diff --git a/app/build.gradle b/app/build.gradle
index b7e8ef2..f279ca9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -5,12 +5,12 @@ plugins {
 
 android {
     namespace 'com.kojiishi.simswitch'
-    compileSdk 33
+    compileSdk 36
 
     defaultConfig {
         applicationId "com.kojiishi.simswitch"
         minSdk 31
-        targetSdk 33
+        targetSdk 36
         versionCode 1
         versionName '0.1'
 
@@ -37,7 +37,7 @@ android {
         compose true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion '1.3.2'
+        kotlinCompilerExtensionVersion '1.5.10'
     }
     packagingOptions {
         resources {
diff --git a/app/src/main/java/com/kojiishi/simswitch/Subscription.kt b/app/src/main/java/com/kojiishi/simswitch/Subscription.kt
index e0a38c4..bebee8b 100644
--- a/app/src/main/java/com/kojiishi/simswitch/Subscription.kt
+++ b/app/src/main/java/com/kojiishi/simswitch/Subscription.kt
@@ -74,7 +74,7 @@ data class Subscription(
             }
             val mgr = context.getSystemService(SubscriptionManager::class.java)
             val subscriptionInfos = mgr.activeSubscriptionInfoList
-            val subscriptions = subscriptionInfos.map { Subscription(it, context) }
+            val subscriptions = subscriptionInfos?.map { Subscription(it, context) } ?: listOf()
             return subscriptions
         }
 
diff --git a/build.gradle b/build.gradle
index 4314313..14c4ea2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '8.0.2' apply false
-    id 'com.android.library' version '8.0.2' apply false
-    id 'org.jetbrains.kotlin.android' version '1.7.20' apply false
+    id 'com.android.application' version '8.4.0' apply false
+    id 'com.android.library' version '8.4.0' apply false
+    id 'org.jetbrains.kotlin.android' version '1.9.22' apply false
 }
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index e5b21b0..b024543 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sun Jun 18 01:05:32 JST 2023
+#Sat Mar 21 11:30:15 GMT 2026
 distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755