diff --git a/channels/fast-4.21.yaml b/channels/fast-4.21.yaml
index 55917466e..d77421d90 100644
--- a/channels/fast-4.21.yaml
+++ b/channels/fast-4.21.yaml
@@ -38,3 +38,4 @@ versions:
 - 4.21.12
 - 4.21.13
 - 4.21.14
+- 4.21.15