diff --git a/channels/stable-4.2.yaml b/channels/stable-4.2.yaml
index d039e3e7f..edd1c15ca 100644
--- a/channels/stable-4.2.yaml
+++ b/channels/stable-4.2.yaml
@@ -37,3 +37,4 @@ versions:
 - 4.2.18
 - 4.2.19
 - 4.2.20
+- 4.2.21
diff --git a/channels/stable-4.3.yaml b/channels/stable-4.3.yaml
index de52d98f6..a1e3b3fa8 100644
--- a/channels/stable-4.3.yaml
+++ b/channels/stable-4.3.yaml
@@ -3,6 +3,8 @@ versions:
 # until s390 is released on 4.3 we may not want to include it in 4.3 channels
 # 4.2 -> 4.3 updates occasionally hit RequiredPoolsFailed, fixed in 4.2.18 and rc.0, but not in 4.2.16: https://bugzilla.redhat.com/show_bug.cgi?id=1782152 https://bugzilla.redhat.com/show_bug.cgi?id=1782149
 # not 4.2.17 because we had a long quiet time after 4.2.16 with no releases
+- 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