diff --git a/.gitignore b/.gitignore
index 3a66e610468a88986e174628ae246f2e555e78da..e0838cbe744aff05171c77648702bf586e1998cf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.dat
 *.asv
 *.f
+*.json