diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # sipcap
 SIP Protocol Capture and Analysis toolkit
+
+This repository contains a few utilities to extract SIP signalling information
+from network traffic, by either capturing from a given network interface or any
+`.pcap` capture file.