diff --git a/.gitignore b/.gitignore
index cc98fadde19699577f4de864812528a226be0256..4b34d30b59be7b6b9d412ebc1dd72fa78b5b7e90 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.log
 *.gz
 *.backup
+*.pdf