diff --git a/CodeIgniter.gitignore b/CodeIgniter.gitignore
index 0f77d9e1..60571a0c 100644
--- a/CodeIgniter.gitignore
+++ b/CodeIgniter.gitignore
@@ -4,3 +4,8 @@
 */cache/*
 !*/cache/index.html
 !*/cache/.htaccess
+
+user_guide_src/build/*
+user_guide_src/cilexer/build/*
+user_guide_src/cilexer/dist/*
+user_guide_src/cilexer/pycilexer.egg-info/*