diff --git a/.gitignore b/.gitignore
index e3f7613fe..6c8ac97b5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,4 @@ CMakeLists.txt.user*
 xcode/
 /Dockerfile
 /python/gtsam/notebooks/.ipynb_checkpoints/ellipses-checkpoint.ipynb
+.cache/