diff --git a/Project-Setup.md b/Project-Setup.md
index fce5155..80c802a 100644
--- a/Project-Setup.md
+++ b/Project-Setup.md
@@ -72,6 +72,11 @@ If your `compile_commands.json` is not kept in the project root, set the
 initialization option `compilationDatabaseDirectory` to an alternative
 directory containing `compile_commands.json`.
 
+You can use jq to concatenate multiple `compile_commands.1.json` fragments:
+```
+cat a/compile_commands.json b/compile_commands.json | jq '.[]' | jq -s '.' > compile_commands.json
+```
+
 ### [CMake](https://cmake.org/)
 
 ```zsh