diff --git a/docs/api/system.lua b/docs/api/system.lua
index a655099b..e5eff27f 100644
--- a/docs/api/system.lua
+++ b/docs/api/system.lua
@@ -192,6 +192,12 @@ function system.get_clipboard() end
 ---@param text string
 function system.set_clipboard(text) end
 
+---
+---Get the process id of lite-xl it self.
+---
+---@return integer
+function system.get_process_id() end
+
 ---
 ---Get amount of iterations since the application was launched
 ---also known as SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency()