diff --git a/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt b/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt
index cfba477..c5b1b85 100644
--- a/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt
+++ b/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt
@@ -1,6 +1,6 @@
 appnope==0.1.0
 backcall==0.1.0
-bleach==3.0.2
+bleach==3.1.1
 cycler==0.10.0
 decorator==4.3.0
 defusedxml==0.5.0