diff --git a/doc/security.txt b/doc/security.txt
index f1d6213cb..3b757a4a9 100644
--- a/doc/security.txt
+++ b/doc/security.txt
@@ -1,6 +1,9 @@
 Acknowledgements
 ================
 
+Black2Fan https://twitter.com/Black2Fan
+https://github.com/gratipay/security-qf35us/issues/1
+
 dstufft
 https://github.com/gittip/www.gittip.com/issues/800#issuecomment-15493967
 https://twitter.com/dstufft/status/319607503061131266
@@ -9,7 +12,6 @@ Berkay Aydin
 https://twitter.com/Brkay_Aydin/status/377611459942817792
 
 
-
 Disclosure
 ==========