diff --git a/tex/.gitignore b/tex/.gitignore
index 5cf7408fa7d0d844a4a53f8873da4ab60029ab4e..f389e1adb97c8a4752349975355c9058f4afcadd 100644
--- a/tex/.gitignore
+++ b/tex/.gitignore
@@ -14,3 +14,4 @@
 *.fls
 _*_.tex
 auto/*.el
+*.rubbercache