diff --git a/.gitignore b/.gitignore
index 89bc0671..986acee7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -435,4 +435,5 @@ $RECYCLE.BIN/
 ##
 ## RimWorld Language Package
 ##
-*.tar
\ No newline at end of file
+*.tar
+Biotech/.history/