diff --git a/src/readme.md b/src/readme.md
index f354d9e6fb..e9f2b9c481 100644
--- a/src/readme.md
+++ b/src/readme.md
@@ -24,6 +24,10 @@
 
   Park management logic such as finance, marketing and research.
 
+- **peep**
+
+  Guest and staff definitions and logic such as action management and pathfinding.
+
 - **platform**
 
   Compiler and operating system specific code such as type definitions, message handling and file input / output.
@@ -42,4 +46,4 @@
 
 - **world**
 
-  World objects and mechanics such as the climate, landscape, sprites and park.
\ No newline at end of file
+  World objects and mechanics such as the climate, landscape, sprites and park.