diff --git a/.gitignore b/.gitignore
index 0b39737..5aa8c3c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,6 @@ _build/
 
 # rule book
 rule_book/
+
+# lib core
+hrc/LibCore.py
diff --git a/hrc/LibCore.py b/hrc/LibCore.py
deleted file mode 100644
index d85d03a..0000000
Binary files a/hrc/LibCore.py and /dev/null differ