diff --git a/SPD-classes/build.gradle b/SPD-classes/build.gradle
index 25aabc90b..bc7fbc98d 100644
--- a/SPD-classes/build.gradle
+++ b/SPD-classes/build.gradle
@@ -1,8 +1,8 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.2"
 
     task ndkBuild(type: Exec){
         description "builds JNI libs from source. " +
diff --git a/core/build.gradle b/core/build.gradle
index 7b6da8811..d9a97e85e 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -1,8 +1,8 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.2"
 
     defaultConfig {
         resConfigs "en_US", "cs", "tr", "ca", "ko", "pl", "it",