diff --git a/app/build.gradle b/app/build.gradle
index 47cc505..b92f9a9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,5 +1,6 @@
 plugins {
     alias(libs.plugins.android.application)
+    alias(libs.plugins.jetbrains.kotlin.android)
     alias(libs.plugins.compose.compiler)
 }
 
@@ -27,6 +28,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
     }
+    kotlinOptions {
+        jvmTarget = '11'
+    }
     buildFeatures {
         compose true
         buildConfig true
@@ -51,4 +55,4 @@ dependencies {
     implementation libs.timber
     implementation "io.getstream:stream-webrtc-android:1.3.10"
     implementation "com.squareup.okhttp3:okhttp:4.12.0"
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/kimgo/posefit/MainActivity.kt b/app/src/main/kotlin/com/kimgo/posefit/MainActivity.kt
similarity index 100%
rename from app/src/main/java/com/kimgo/posefit/MainActivity.kt
rename to app/src/main/kotlin/com/kimgo/posefit/MainActivity.kt
diff --git a/app/src/main/java/com/kimgo/posefit/PosefitApplication.kt b/app/src/main/kotlin/com/kimgo/posefit/PosefitApplication.kt
similarity index 100%
rename from app/src/main/java/com/kimgo/posefit/PosefitApplication.kt
rename to app/src/main/kotlin/com/kimgo/posefit/PosefitApplication.kt
diff --git a/app/src/main/java/com/kimgo/posefit/sender/SimpleSdpObserver.kt b/app/src/main/kotlin/com/kimgo/posefit/sender/SimpleSdpObserver.kt
similarity index 100%
rename from app/src/main/java/com/kimgo/posefit/sender/SimpleSdpObserver.kt
rename to app/src/main/kotlin/com/kimgo/posefit/sender/SimpleSdpObserver.kt
diff --git a/app/src/main/java/com/kimgo/posefit/sender/WebRtcSenderClient.kt b/app/src/main/kotlin/com/kimgo/posefit/sender/WebRtcSenderClient.kt
similarity index 100%
rename from app/src/main/java/com/kimgo/posefit/sender/WebRtcSenderClient.kt
rename to app/src/main/kotlin/com/kimgo/posefit/sender/WebRtcSenderClient.kt
diff --git a/gradle.properties b/gradle.properties
index ec6334a..03709ef 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -7,9 +7,8 @@
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
-org.gradle.java.home=C\:\\Program Files\\Java\\jdk-17
 android.useAndroidX=true
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. For more details, visit
 # https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
-# org.gradle.parallel=true
\ No newline at end of file
+# org.gradle.parallel=true
diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755