diff --git a/apps/guide/settings/base.py b/apps/guide/settings/base.py
index 9a60ee5..8f7f077 100644
--- a/apps/guide/settings/base.py
+++ b/apps/guide/settings/base.py
@@ -310,6 +310,7 @@
 
 WAGTAIL_GUIDE_VERSIONS = [
     "latest",
+    "6.3.x",
     "6.2.x",
     "6.1.x",
     "6.0.x",