diff --git a/android/build.gradle b/android/build.gradle
index dd63f1b..62a9496 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -27,18 +27,22 @@ apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
+
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }
     defaultConfig {
-        minSdkVersion 16
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        minSdkVersion 21
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     lintOptions {
         disable 'InvalidPackage'
     }
+    
+    aaptOptions.cruncherEnabled = false
+    aaptOptions.useNewCruncher = false
 }
 
 dependencies {
diff --git a/ios/qr_code_scanner.podspec b/ios/qr_code_scanner.podspec
index b71df1b..f7dcd4c 100644
--- a/ios/qr_code_scanner.podspec
+++ b/ios/qr_code_scanner.podspec
@@ -18,5 +18,6 @@ A new Flutter project.
   s.dependency 'Flutter'
   s.dependency 'MTBBarcodeScanner'
   s.ios.deployment_target = '8.0'
+  s.swift_version = '5.0'
 end