diff --git a/.gitignore b/.gitignore
index a71b87a4..98072057 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,7 +8,8 @@ brut.apktool/apktool-cli/build*
 brut.apktool/apktool-lib/build*
 brut.apktool/build*
 build*
-*~
+
+
 /brut.apktool/nbproject/private/
 /brut.apktool.smali/baksmali/nbproject/private/
 /brut.apktool.smali/dexlib/nbproject/private/
@@ -19,3 +20,5 @@ build*
 /brut.apktool/apktool-lib/nbproject/private/
 /brut.apktool/apktool-cli/nbproject/private/
 *.kate-swp
+*~
+*.project
diff --git a/build.gradle b/build.gradle
index 34895006..4e17644e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,6 +6,17 @@ repositories {
   mavenCentral()
 }
 
+sourceCompatibility = 1.6
+targetCompatibility = 1.6
+
+class Compatibility {
+  String version
+  Compatibility(String versionValue) {
+    def matcher = (versionValue =~ /Java (\d)/)
+    version = matcher[0][1]
+  }
+  String toString() { version }
+}
 dependencies {
 }