diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb951fbf26..dcf218cb1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -61,6 +61,7 @@ without arguments starts a full interactive Python console.
 - `list_to_string` is now `iter_to_string` (but old name still works as legacy alias). It will 
   now accept any input, including generators and single values. 
 - EvTable should now correctly handle columns with wider asian-characters in them.
+- Update Twisted requirement to >=2.3.0 to close security vulnerability
    
 
 
diff --git a/requirements.txt b/requirements.txt
index e569a8ac07..7e70b36daa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 
 # general
 django >= 2.2.5, < 2.3
-twisted >= 19.2.1, < 20.0.0
+twisted >= 20.3.0, < 21.0.0
 pytz
 django-sekizai
 inflect