diff --git a/docs/documentation/diagrams/infrastructure.md b/docs/documentation/diagrams/infrastructure.md
index bbb68a7..eff2532 100644
--- a/docs/documentation/diagrams/infrastructure.md
+++ b/docs/documentation/diagrams/infrastructure.md
@@ -7,7 +7,7 @@ Raspberry pi --> NodeJS
 Raspberry pi --> Database
 NodeJS --> Androidapp : getExerciseData (Wifi, Rest API)
 Database <--> NodeJS : Database queries
-
+NodeJS --> ESP8266
 
 ESP8266 --> Androidapp : getRotationalData (Wifi)
 namespace Server {
@@ -32,6 +32,7 @@ namespace Server {
     class NodeJS {
         +MariaDB
         GetRandomExercise()
+        PassIpAddress()
     }
 }