diff --git a/Project-Setup.md b/Project-Setup.md
index b7d067f..fb14cf2 100644
--- a/Project-Setup.md
+++ b/Project-Setup.md
@@ -265,6 +265,11 @@ ln -s Debug/compile_commands.json
 touch .ccls-root
 ```
 
+You can filter out some files to speed up indexing. Example initialization options:
+```javascript
+{"index":{"initialBlacklist":["/(clang|lld|llvm)/(test|unittests)/", "/llvm/(bindings|examples|utils)/", "/StaticAnalyzer/"]}}
+```
+
 ### LLVM monorepo
 
 ```zsh