diff --git a/readme.md b/readme.md
index ca367350..83bcfe10 100644
--- a/readme.md
+++ b/readme.md
@@ -12,5 +12,7 @@
 # Todo
 - [ ] Ko-fi supporter list
 - [ ] Support more GTE
+- [ ] Easy serial code swap
+  - [ ] Support .subst files to be substituted with environment variables 
 - [ ] PS3 PKG generation tool?
 - [ ] PS3 runtime detection?
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