diff --git a/capture_the_flag/README.md b/capture_the_flag/README.md
index 5b2646f..fd541ec 100644
--- a/capture_the_flag/README.md
+++ b/capture_the_flag/README.md
@@ -5,6 +5,7 @@ Capture the flag (CTF) is a computer security competition that is designed for e
 * https://github.com/apsdehal/awesome-ctf
 
 ## Some others:
+* https://trailofbits.github.io/ctf/
 * https://ctftime.org
 * https://ctf365.com
 * http://captf.com