diff --git a/.gitignore b/.gitignore
index 96ff8d979..9b275d488 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,4 @@ src/util/test_amount
 src/util/test_crypto
 src/util/test_json
 src/util/test_wireformats
+doc/paper/llncs.cls