diff --git a/README.md b/README.md
index 4f4074ff14..41fe4eb076 100644
--- a/README.md
+++ b/README.md
@@ -78,7 +78,7 @@ To be notified when there’s a new release, you can either:
 
 Find out how to [update with npm](https://frontend.design-system.service.gov.uk/updating-with-npm/).
 
-### Security
+## Security
 
 GDS is an advocate of responsible vulnerability disclosure. If you’ve found a vulnerability, we would like to know so we can fix it.