diff --git a/build.gradle b/build.gradle
index 481041b70..2b2fb0754 100644
--- a/build.gradle
+++ b/build.gradle
@@ -77,6 +77,11 @@ android {
 	compileSdkVersion 19
 	buildToolsVersion toolVersion
 
+	compileOptions {
+		sourceCompatibility = "1.6"
+		targetCompatibility = "1.6"
+	}
+
 	sourceSets {
 		main {
 			manifest.srcFile 'AndroidManifest.xml'
diff --git a/project.properties b/project.properties
index 41cb681d3..a9b6cb869 100644
--- a/project.properties
+++ b/project.properties
@@ -1,6 +1,8 @@
 proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
 
 target=android-19
+compile.source=1.6
+compile.target=1.6
 
 android.library.reference.1=extern/UniversalImageLoader/library
 android.library.reference.2=extern/MemorizingTrustManager