diff --git a/.gitignore b/.gitignore
index a3d18c0..c4ba5a3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@ docs/source/api/generated
 docs/gh-pages
 IPython/frontend/html/notebook/static/mathjax
 *.py[co]
+__pycache__
 build
 *.egg-info
 *~