diff --git a/.gitignore b/.gitignore
index 5569e12..8caf9c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,3 @@
-# Java
-.mtj.tmp/
-*.class
-*.jar
-*.war
-*.ear
-*.nar
-hs_err_pid*
-
 # Gradle
 build/
 .gradle
@@ -52,3 +43,4 @@ jspm_packages/
 
 # python
 __pycache__
+
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..e708b1c
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ