diff --git a/README.md b/README.md
index bfcfa3b..ea26ae2 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![MITRE ATT&CK® v8–14](https://img.shields.io/badge/MITRE%20ATT%26CK®-v8–14-red)](https://attack.mitre.org/)
+[![MITRE ATT&CK® v8–15](https://img.shields.io/badge/MITRE%20ATT%26CK®-v8–15-red)](https://attack.mitre.org/)
 [![build](https://github.com/center-for-threat-informed-defense/mappings-editor/actions/workflows/editor-build.yml/badge.svg)](https://github.com/center-for-threat-informed-defense/mappings-editor/actions/workflows/editor-build.yml)
 
 # Mappings Editor