diff --git a/staging/publishing/rules.yaml b/staging/publishing/rules.yaml
index cbbed6c2446..8376a1e0fdc 100644
--- a/staging/publishing/rules.yaml
+++ b/staging/publishing/rules.yaml
@@ -34,6 +34,10 @@ rules:
       branch: release-1.20
       dir: staging/src/k8s.io/code-generator
     name: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/code-generator
+    name: release-1.21
 
 - destination: apimachinery
   library: true
@@ -61,6 +65,10 @@ rules:
       branch: release-1.20
       dir: staging/src/k8s.io/apimachinery
     name: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/apimachinery
+    name: release-1.21
 
 - destination: api
   library: true
@@ -103,6 +111,13 @@ rules:
     dependencies:
       - repository: apimachinery
         branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/api
+    name: release-1.21
+    dependencies:
+      - repository: apimachinery
+        branch: release-1.21
 
 - destination: client-go
   library: true
@@ -175,6 +190,19 @@ rules:
       # assumes GO111MODULE=on
       go build -mod=mod ./...
       go test -mod=mod ./...
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/client-go
+    name: release-1.21
+    dependencies:
+      - repository: apimachinery
+        branch: release-1.21
+      - repository: api
+        branch: release-1.21
+    smoke-test: |
+      # assumes GO111MODULE=on
+      go build -mod=mod ./...
+      go test -mod=mod ./...
 
 - destination: component-base
   library: true
@@ -237,6 +265,17 @@ rules:
       branch: release-1.20
     - repository: client-go
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/component-base
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
 
 - destination: component-helpers
   library: true
@@ -263,6 +302,17 @@ rules:
       branch: release-1.20
     - repository: client-go
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/component-helpers
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
 
 - destination: apiserver
   library: true
@@ -335,6 +385,19 @@ rules:
       branch: release-1.20
     - repository: component-base
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/apiserver
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
 
 - destination: kube-aggregator
   branches:
@@ -426,6 +489,23 @@ rules:
       branch: release-1.20
     - repository: code-generator
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/kube-aggregator
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: code-generator
+      branch: release-1.21
 
 - destination: sample-apiserver
   branches:
@@ -542,6 +622,28 @@ rules:
     smoke-test: |
       # assumes GO111MODULE=on
       go build -mod=mod .
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/sample-apiserver
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
+    - repository: code-generator
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    required-packages:
+    - k8s.io/code-generator
+    smoke-test: |
+      # assumes GO111MODULE=on
+      go build -mod=mod .
 
 - destination: sample-controller
   branches:
@@ -638,6 +740,24 @@ rules:
     smoke-test: |
       # assumes GO111MODULE=on
       go build -mod=mod .
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/sample-controller
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: code-generator
+      branch: release-1.21
+    required-packages:
+    - k8s.io/code-generator
+    smoke-test: |
+      # assumes GO111MODULE=on
+      go build -mod=mod .
 
 - destination: apiextensions-apiserver
   branches:
@@ -739,6 +859,25 @@ rules:
       branch: release-1.20
     required-packages:
     - k8s.io/code-generator
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/apiextensions-apiserver
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
+    - repository: code-generator
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    required-packages:
+    - k8s.io/code-generator
 
 - destination: metrics
   library: true
@@ -811,6 +950,19 @@ rules:
       branch: release-1.20
     - repository: code-generator
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/metrics
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: code-generator
+      branch: release-1.21
 
 - destination: cli-runtime
   library: true
@@ -873,6 +1025,17 @@ rules:
       branch: release-1.20
     - repository: client-go
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/cli-runtime
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
 
 - destination: sample-cli-plugin
   library: false
@@ -945,6 +1108,19 @@ rules:
       branch: release-1.20
     - repository: client-go
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/sample-cli-plugin
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: cli-runtime
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
 
 - destination: kube-proxy
   library: true
@@ -1017,6 +1193,19 @@ rules:
       branch: release-1.20
     - repository: client-go
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/kube-proxy
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
 
 - destination: kubelet
   library: true
@@ -1081,6 +1270,19 @@ rules:
       branch: release-1.20
     - repository: component-base
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/kubelet
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
 
 - destination: kube-scheduler
   library: true
@@ -1153,6 +1355,19 @@ rules:
       branch: release-1.20
     - repository: client-go
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/kube-scheduler
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
 
 - destination: controller-manager
   library: true
@@ -1192,6 +1407,21 @@ rules:
       branch: release-1.20
     - repository: apiserver
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/controller-manager
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
 
 - destination: cloud-provider
   library: true
@@ -1268,6 +1498,23 @@ rules:
       branch: release-1.20
     - repository: controller-manager
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/cloud-provider
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: controller-manager
+      branch: release-1.21
 
 - destination: kube-controller-manager
   library: true
@@ -1352,6 +1599,25 @@ rules:
       branch: release-1.20
     - repository: cloud-provider
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/kube-controller-manager
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: controller-manager
+      branch: release-1.21
+    - repository: cloud-provider
+      branch: release-1.21
 
 - destination: cluster-bootstrap
   library: true
@@ -1404,6 +1670,15 @@ rules:
       branch: release-1.20
     - repository: api
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/cluster-bootstrap
+    name: release-1.21
+    dependencies:
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: api
+      branch: release-1.21
 
 - destination: csi-translation-lib
   library: true
@@ -1470,6 +1745,15 @@ rules:
       branch: release-1.20
     - repository: apimachinery
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/csi-translation-lib
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
 
 - destination: legacy-cloud-providers
   library: true
@@ -1576,6 +1860,27 @@ rules:
       branch: release-1.20
     - repository: controller-manager
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/legacy-cloud-providers
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: cloud-provider
+      branch: release-1.21
+    - repository: csi-translation-lib
+      branch: release-1.21
+    - repository: apiserver
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: controller-manager
+      branch: release-1.21
 
 - destination: node-api
   library: true
@@ -1621,6 +1926,10 @@ rules:
       branch: release-1.20
       dir: staging/src/k8s.io/cri-api
     name: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/cri-api
+    name: release-1.21
 
 - destination: kubectl
   library: true
@@ -1727,6 +2036,27 @@ rules:
       branch: release-1.20
     - repository: metrics
       branch: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/kubectl
+    name: release-1.21
+    dependencies:
+    - repository: api
+      branch: release-1.21
+    - repository: apimachinery
+      branch: release-1.21
+    - repository: cli-runtime
+      branch: release-1.21
+    - repository: client-go
+      branch: release-1.21
+    - repository: code-generator
+      branch: release-1.21
+    - repository: component-base
+      branch: release-1.21
+    - repository: component-helpers
+      branch: release-1.21
+    - repository: metrics
+      branch: release-1.21
 
 - destination: mount-utils
   library: true
@@ -1739,3 +2069,7 @@ rules:
       branch: release-1.20
       dir: staging/src/k8s.io/mount-utils
     name: release-1.20
+  - source:
+      branch: release-1.21
+      dir: staging/src/k8s.io/mount-utils
+    name: release-1.21