diff --git a/.gitignore b/.gitignore
index ecf7867c5dc0b83857362da5990231f33dd9c481..7f1600a9f22850274faef28668d938aeb10276e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 omdoc-semantics/macros
-omdoc-semantics/tikz
\ No newline at end of file
+omdoc-semantics/tikz
+auto