diff --git a/README.md b/README.md
index de9874f..dc3a3cb 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ A certain amount of (domain- or business-specific) analysis is necessary to crea
             <a href="http://osint.bambenekconsulting.com/feeds/c2-ipmasterlist.txt" target="_blank">C&amp;C Tracker</a>
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-            A feed of known, active and non-sinkholed C&amp;C IP addresses, from Bambenek Consulting.
+            A feed of known, active and non-sinkholed C&amp;C IP addresses, from Bambenek Consulting. Requires license for commercial use.
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