diff --git a/README.md b/README.md
index 759d338..9846217 100644
--- a/README.md
+++ b/README.md
@@ -90,8 +90,7 @@ for documentation we currently just use README.md files.
 the devshell provides the python package ['grip'](https://github.com/joeyespo/grip) which can be used to preview different README.md files in the browser.
 the usage is simple, just run ```grip``` in the same folder as the README.md you wanna preview. then open your browser at ```http://localhost:6419 ```.
 
-
-### todos...
+## todos...
 
 #### infrastructure
 * [ ] host a local wiki with public available information about the space, for example:
@@ -106,6 +105,13 @@ the usage is simple, just run ```grip``` in the same folder as the README.md you
   * [ ] request mulvad acc
   * [ ] remove freifunk, use openwrt with mulvad configured
 
+#### external services
+we want to host two services that need a bit more resources, this is a booking system for the room itself and a library system.
+- [ ] analyse best way to include our stuff into external nixOs server
+  - [ ] writing some module that is included by the server
+  - [ ] directly use nixOs container on host
+  - [ ] combination of both (module that manages nginx blabla + nixOs container for the services
+
 #### bots&progrmaming
 * [ ] create telegram bot automatically posting tuesday events
 * [ ] create webapp/interface replacing current task list pad