diff --git a/app/build.gradle b/app/build.gradle
index 54a7bb0ef..f63fcf375 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,8 +3,8 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion "26.0.1"
+    compileSdkVersion 25
+    buildToolsVersion "25.0.3"
 
     defaultConfig {
         applicationId "com.simplemobiletools.gallery"