diff --git a/channels/fast-4.2.yaml b/channels/fast-4.2.yaml
index 08651e946..b0e2061ee 100644
--- a/channels/fast-4.2.yaml
+++ b/channels/fast-4.2.yaml
@@ -41,3 +41,4 @@ versions:
 - 4.2.18
 - 4.2.19
 - 4.2.20
+- 4.2.21
diff --git a/channels/fast-4.3.yaml b/channels/fast-4.3.yaml
index cd7f0b042..52fd8d917 100644
--- a/channels/fast-4.3.yaml
+++ b/channels/fast-4.3.yaml
@@ -7,6 +7,7 @@ versions:
 - 4.2.18+amd64
 - 4.2.19+amd64
 - 4.2.20+amd64
+- 4.2.21+amd64
 - 4.3.0
 - 4.3.1
 # Upgrade edges disabled for 4.3.2 and 4.3.3 because of bugs https://bugzilla.redhat.com/show_bug.cgi?id=1802248, https://bugzilla.redhat.com/show_bug.cgi?id=1805444, https://bugzilla.redhat.com/show_bug.cgi?id=1808429