diff --git a/.gitignore b/.gitignore
index a035c2b..9edcfca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,4 +12,5 @@
 user_guide_src/cilexer/build/*
 user_guide_src/cilexer/dist/*
 user_guide_src/cilexer/pycilexer.egg-info/*
-/vendor/
\ No newline at end of file
+/vendor/
+/nbproject/
\ No newline at end of file