diff --git a/README.md b/README.md
index 6284b03f32db4335fe1b61c7b0b021acad4236d9..b406e549e394a8121128b63a7d604b0498c2eced 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # SLUB SIP Builder
 
 ## Description
-A CLI tool to create valid BagIt-based SIPs for ingest into the [SLUBArchiv](https://slubarchiv.slub-dresden.de/), the digital long-term preservation archive of the Saxon State and University Library Dresden (SLUB).
+A CLI tool to create valid [BagIt](https://tools.ietf.org/html/rfc8493) based submission information packages (SIPs) for ingest into the [SLUBArchiv](https://slubarchiv.slub-dresden.de/), the digital long-term preservation archive of the Saxon State and University Library Dresden (SLUB).
 
 As a user, you have one of three options to create your SIP: `copy`, `move` or `replace`.  
 NOTE: The use of option `copy` is strongly recommended. The other options modify your source directory. Please use this with caution!