diff --git a/amethyst/build.gradle b/amethyst/build.gradle
index c1ae1376d..82e5ae67b 100644
--- a/amethyst/build.gradle
+++ b/amethyst/build.gradle
@@ -175,8 +175,8 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
+        sourceCompatibility JavaVersion.VERSION_21
+        targetCompatibility JavaVersion.VERSION_21
     }
 
     buildFeatures {
@@ -212,7 +212,7 @@ configurations.all {
 
 kotlin {
     compilerOptions {
-        jvmTarget = JvmTarget.JVM_17
+        jvmTarget = JvmTarget.JVM_21
     }
 }
 
diff --git a/ammolite/build.gradle b/ammolite/build.gradle
index ec74b8808..9c8f5dc4e 100644
--- a/ammolite/build.gradle
+++ b/ammolite/build.gradle
@@ -32,8 +32,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
+        sourceCompatibility JavaVersion.VERSION_21
+        targetCompatibility JavaVersion.VERSION_21
     }
     packagingOptions {
         resources {
@@ -44,7 +44,7 @@ android {
 
 kotlin {
     compilerOptions {
-        jvmTarget = JvmTarget.JVM_17
+        jvmTarget = JvmTarget.JVM_21
         freeCompilerArgs.add("-Xstring-concat=inline")
     }
 }
diff --git a/benchmark/build.gradle b/benchmark/build.gradle
index a45aa4aae..866d4e71b 100644
--- a/benchmark/build.gradle
+++ b/benchmark/build.gradle
@@ -20,8 +20,8 @@ android {
     }
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
+        sourceCompatibility JavaVersion.VERSION_21
+        targetCompatibility JavaVersion.VERSION_21
     }
 
     sourceSets.androidTest.assets.srcDirs += ["../quartz/src/androidTest/assets"]
@@ -48,7 +48,7 @@ android {
 
 kotlin {
     compilerOptions {
-        jvmTarget = JvmTarget.JVM_17
+        jvmTarget = JvmTarget.JVM_21
         freeCompilerArgs.add("-Xstring-concat=inline")
     }
 }
diff --git a/commons/build.gradle b/commons/build.gradle
index 82c054688..cba6f3a55 100644
--- a/commons/build.gradle
+++ b/commons/build.gradle
@@ -29,8 +29,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
+        sourceCompatibility JavaVersion.VERSION_21
+        targetCompatibility JavaVersion.VERSION_21
     }
 
     buildFeatures {
@@ -40,7 +40,7 @@ android {
 
 kotlin {
     compilerOptions {
-        jvmTarget = JvmTarget.JVM_17
+        jvmTarget = JvmTarget.JVM_21
         freeCompilerArgs.add("-Xstring-concat=inline")
     }
 }
diff --git a/quartz/build.gradle b/quartz/build.gradle
index d6e191a40..59399786a 100644
--- a/quartz/build.gradle
+++ b/quartz/build.gradle
@@ -28,8 +28,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
+        sourceCompatibility JavaVersion.VERSION_21
+        targetCompatibility JavaVersion.VERSION_21
     }
     packagingOptions {
         resources {
@@ -40,7 +40,7 @@ android {
 
 kotlin {
     compilerOptions {
-        jvmTarget = JvmTarget.JVM_17
+        jvmTarget = JvmTarget.JVM_21
         freeCompilerArgs.add("-Xstring-concat=inline")
     }
 }