diff --git a/android/build.gradle b/android/build.gradle
index 8a174dc..8e5117b 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -1,12 +1,16 @@
 apply plugin: 'com.android.library'
 
+def DEFAULT_COMPILE_SDK_VERSION = 25
+def DEFAULT_BUILD_TOOLS_VERSION = "25.0.2"
+def DEFAULT_TARGET_SDK_VERSION  = 25
+
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion rootProject.hasProperty('compileSdkVersion') ? rootProject.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
+    buildToolsVersion rootProject.hasProperty('buildToolsVersion') ? rootProject.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 25
+        rootProject.hasProperty('targetSdkVersion') ? rootProject.targetSdkVersion : DEFAULT_TARGET_SDK_VERSION
         versionCode 1
         versionName "1.0"
         ndk {