diff --git a/.gitignore b/.gitignore
index 75f79b3..c9d4b2f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-jmdict*.json
+build/*
+!build/.keep
diff --git a/build/.keep b/build/.keep
new file mode 100644
index 0000000..e69de29