diff --git a/hello-swift-java/hashing-app/build.gradle.kts b/hello-swift-java/hashing-app/build.gradle.kts
index 607f1f6..e087f09 100644
--- a/hello-swift-java/hashing-app/build.gradle.kts
+++ b/hello-swift-java/hashing-app/build.gradle.kts
@@ -28,11 +28,11 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     kotlinOptions {
-        jvmTarget = "11"
+        jvmTarget = "17"
     }
     buildFeatures {
         compose = true
diff --git a/hello-swift-java/hashing-lib/build.gradle b/hello-swift-java/hashing-lib/build.gradle
index 818f756..f0170c9 100644
--- a/hello-swift-java/hashing-lib/build.gradle
+++ b/hello-swift-java/hashing-lib/build.gradle
@@ -14,11 +14,11 @@ android {
     defaultConfig {
         minSdkVersion 28
     }
-}
 
-java {
-    sourceCompatibility = JavaVersion.VERSION_11
-    targetCompatibility = JavaVersion.VERSION_11
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
 }
 
 dependencies {