diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index b02430b305e5707792ba2ae783397a5b8489fc7f..61ac19608d9d2f4d2a54bf94b25ef65330682a43 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -6,3 +6,4 @@ Significant contributors:
 - Olivier Pereira
 - Olivier de Marneffe
 - Emily Stark, Mike Hamburg, Tom Wu, and Dan Boneh for SJCL and integration of javascript crypto.
+- Nicholas Chang-Fong and Aleksander Essex for security reports and fixes.