diff --git a/app/build.gradle b/app/build.gradle
index 6b57d88ab..ce30f7b89 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,12 +7,12 @@ plugins {
 
 android {
     namespace 'com.vitorpamplona.amethyst'
-    compileSdk 33
+    compileSdk 34
 
     defaultConfig {
         applicationId "com.vitorpamplona.amethyst"
         minSdk 26
-        targetSdk 33
+        targetSdk 34
         versionCode 272
         versionName "0.73.3"
 
diff --git a/benchmark/build.gradle b/benchmark/build.gradle
index 63c6e2931..164ea3f9e 100644
--- a/benchmark/build.gradle
+++ b/benchmark/build.gradle
@@ -6,20 +6,19 @@ plugins {
 
 android {
     namespace 'com.vitorpamplona.amethyst.benchmark'
-    compileSdk 33
+    compileSdk 34
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
     }
-
     kotlinOptions {
-        jvmTarget = "1.8"
+        jvmTarget = '17'
     }
 
     defaultConfig {
         minSdk 26
-        targetSdk 33
+        targetSdk 34
 
         testInstrumentationRunner 'androidx.benchmark.junit4.AndroidBenchmarkRunner'
     }
diff --git a/quartz/build.gradle b/quartz/build.gradle
index add2ed196..916b6afdc 100644
--- a/quartz/build.gradle
+++ b/quartz/build.gradle
@@ -6,11 +6,11 @@ plugins {
 
 android {
     namespace 'com.vitorpamplona.quartz'
-    compileSdk 33
+    compileSdk 34
 
     defaultConfig {
         minSdk 26
-        targetSdk 33
+        targetSdk 34
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles "consumer-rules.pro"